All answered questions

NAD+ supplements measurably raise NAD+ levels in your blood and, in one study, prevented biological age from rising, but did…

Biological ageing clocks measure methylation patterns on your DNA and show that loss of cell identity resets the counter to…

A protein test is a promising and now reasonably well-supported way to measure biological ageing, particularly as a predictor…

A clinic package can capture more than a single test, but only if it combines the right, newer markers. As long as reference…

GrimAge2 has the strongest evidence base for predicting mortality and healthy life years. If you want to know which clock…

The same test yields reasonably consistent results when repeated, but different tests do not measure the same thing and are…

Clocks change slowly: two years is a realistic minimum to see the effect of a lifestyle change, but whether a lower score…

A biological age higher than your calendar age is a signal, not a diagnosis. Use the result as a reason to examine your…

Standard blood test results can provide an estimate of your biological age through PhenoAge, and that estimate predicts health…

GlycanAge measures something real, but whether the score reliably reflects your biological age has not yet been independently…

There are early encouraging signs that semaglutide may be able to slow biological ageing, but the clinical evidence comes from…

Telomere length is a relevant biological measure, but does not give a clear-cut signal: shorter telomeres increase the risk of…

Epigenetic clocks can diverge substantially for the same purpose, so your result does genuinely depend on which clock is used.…

Epigenetic reprogramming consistently and convincingly rejuvenates cells and tissues in animal and laboratory studies, but no…

A low klotho level is associated with a higher risk of death in older age, but as a personal measure of ageing speed the test…

There are initial, cautiously positive indications from one small study, but it is too small and too influenced by commercial…

Reliable evidence that calcium AKG lowers biological age in humans is lacking. The well-known claim of 8 years comes from a…

Lifestyle can probably slow telomere shortening, but the starting length of your telomeres is largely genetically determined…

Prolonged stress is associated with signs of faster cellular ageing, but whether this is truly causal and applies to everyone…

Biological age tests are scientifically grounded when applied to large groups, but what a score means for you personally has…

An epigenetic age test provides a meaningful indication of biological ageing, but is not yet a definitive verdict on your…

The country you live in probably influences biological ageing markers through diet and living conditions, but direct…

Multiple studies show that a healthy dietary pattern can favourably influence your epigenetic age, although these are…

Too much sitting demonstrably weakens your day-night rhythm, even after just one day. Moving more, and preferably in the…

Loneliness is associated with measurably faster biological ageing, and that association has been found across multiple…

A rising systolic blood pressure and a widening gap between the upper and lower numbers are recognisable signs of vascular…

A saliva test provides a reasonable estimate of your calendar age, but does not measure exactly the same thing as a blood test…

Whether chronic pain makes you age faster depends strongly on the type of pain, the accompanying stress and depression, and…

DunedinPACE measures how quickly you are ageing biologically and is associated with disease and premature death, but the test…

Blood markers such as protein profiles, DNA-tag patterns, telomere length and standard inflammation markers each offer their…

Alcohol accelerates multiple biological ageing processes, including gut damage, inflammation, and brain deterioration. The…

Multiple studies confirm that women are biologically younger than men of the same age, but women also spend their extra years…

Research shows that meditation has a beneficial effect on telomerase activity, an enzyme that protects cells from ageing. In…

The night is biologically not a pause but an active recovery phase, and that phase deteriorates noticeably with age. Those who…

The Horvath clock was the first biological age measure that worked broadly across virtually all tissues, and that is what…

Regular moderate to vigorous exercise is associated with a biological age that comes out 1 to 3 years lower, and molecular…

A blood test can estimate the biological age of individual organs, and accelerated ageing is clearly associated with more…

Calorie restriction demonstrably slows the biological rate of ageing in cells, including in people. An approach such as the…

Smoking measurably accelerates the biological ageing of lung cells, the immune system, and the reproductive system. Stopping…

Fasting, particularly intermittent fasting and ketogenic diets, moves multiple biological ageing markers in a favourable…

An epigenetic clock reads chemical labels on your DNA to estimate your biological age, which already says something about your…

NAD+ supplements reliably raise your blood levels. Whether that also slows biological ageing has not yet been demonstrated in…

Healthspan and lifespan are two separate things: you can live a long time yet lose years to illness and decline. Calorie…

A telomere test is technically possible but currently provides little actionable information for you as an individual, because…

Yes, people age through different organ pathways. The science needed to map this precisely for each individual is promising,…

Your face does emit biological signals, but it is too limited and too variable to measure your biological age accurately. Take…

At the molecular level everyone ages at a broadly similar baseline rate, but in terms of health and life expectancy people can…

The typical spread between your biological and calendar age is around one to two years. Studies name no firm upper limit, but…

The underlying technology has scientific merit, but commercial tests have not yet been independently validated and the…

There are promising hints that biological age is measurable and perhaps steerable, but this has not been proven. Wait for…

Epigenetic clocks are reliable predictors of health risks and the chance of dying sooner, but as an individual measurement…

Sitting for prolonged periods, a disrupted circadian rhythm and muscle loss are the best-supported negative factors for your…

A higher VO2max is strongly associated with lower mortality and a more favourable biological age, but is more of a gauge of…

Epigenetic clocks, particularly GrimAge and PhenoAge, currently offer the best estimate of your biological age, but they are…

Ageing is well described biologically, but there are no proven means of genuinely slowing it in humans yet. For now, focus on…

Biological age tests such as GrimAge and DunedinPACE are associated with health outcomes in scientific research, but no…

Telomeres protect your genetic material, and they shorten over the years, largely determined by your genes. Whether you can…

Prolonged stress measurably accelerates your biological ageing. Healthy habits can noticeably slow that process.

In mild to moderate Alzheimer's disease, these medications measurably slow cognitive decline. The benefit is modest: side…

There are promising indications that an active lifestyle and treatment of risk factors such as high blood pressure and…

Yes, the biological changes in Alzheimer's disease begin on average roughly twenty years before diagnosis, but symptoms appear…

Creatine does more in the brain than in the muscles: it buffers energy and protects the brain against stress such as sleep…

Regular physical activity is the best lifestyle choice for reducing your risk of Parkinson's disease: more exercise is…

People in areas with higher lithium levels in drinking water develop dementia less often, but whether a deficiency actually…

An omega-3 deficiency demonstrably harms the brain, especially during early development and in depression. If you have…

GLP-1 agonists show strong indications of protective and restorative effects on nerve cells in animal research, but results in…

Memory loss has many possible causes that differ greatly from one another. If you suddenly develop memory problems, always…

Memory can be trained, but the smartest investment is regular exercise: that has the strongest and broadest support for…

A daily multivitamin appears to offer modest memory protection in older people who are at risk of nutritional shortfalls or…

This type of sleep talking is a serious early warning sign for Lewy body dementia and Parkinson's disease. Does your partner…

Ozempic demonstrably changes how your brain responds to food and hunger, which is the core driver of the weight loss. Whether…

Microglia play an active role in brain ageing through fat build-up and energy shortage, but most of the evidence still comes…

Psilocybin shows promising effects on the brain and mood in supervised settings, but the research is still limited and…

Pronounced white spots on a brain scan demonstrably increase the risk of dementia, but not every spot is equally concerning.…

There is a consistent association between oral bacteria and Alzheimer's disease, but a proven cause-and-effect relationship in…

Lithium slows cognitive decline in mild memory problems and early Alzheimer's disease, but for healthy people or as a…

Cognitive activities, a plant-based dietary pattern, and regular exercise, preferably in combination, offer the best-supported…

For people with memory complaints the early signals are cautiously positive, but the studies are small and not conclusive. As…

Hearing loss demonstrably increases the risk of dementia, and a hearing aid appears to help, but proven protection for…

Long-term exposure to air pollution, and fine particulate matter in particular, is associated with an increased risk of…

Memory loss with ageing is a normal biological process with multiple clearly demonstrated causes, but you can slow it down:…

Actively using two languages throughout your life is associated with a lower risk of dementia and a brain that continues to…

Lifestyle does meaningfully influence your dementia risk: one third of all cases are linked to modifiable factors such as…

Getting good sleep, eating mindfully according to the MIND diet and engaging in targeted cognitive training have the strongest…

Years of insufficient sleep damages the brain through multiple pathways at once, and some of that damage appears difficult or…

There are preliminary indications that low doses of lithium may offer brain protection, but the evidence is still too thin and…

Lion's mane shows cautiously positive signals for attention and working memory in small studies, but the evidence is still too…

Do not take this as a supplement. Methylene blue is a registered medicine, not a dietary supplement, and is not permitted as…

MgT has preliminary indications that it raises brain magnesium more effectively and may support cognition, but the human…

Loss of smell is a well-documented early sign of Alzheimer's disease, and changes in body odour are being investigated as a…

MRS can signal brain abnormalities in early Alzheimer's disease, but is not yet ready for use as a standalone diagnostic tool.…

Poor air quality, especially fine particulate matter, is consistently associated with worse cognitive performance and possibly…

People who used a sauna four to seven times a week developed dementia considerably less often in long-running research than…

Watching more than 3.5 hours of television per day is associated with faster memory decline in people aged 50 and over,…

High cholesterol in middle age likely increases the risk of dementia, but at older ages the relationship is less clear and…

A clearly underactive or overactive thyroid can noticeably affect your memory, concentration and mood. With mild thyroid…

Drinking 2 to 3 cups of caffeinated coffee daily is associated with a lower dementia risk in several large studies, but this…

Prolonged loneliness is associated with a higher risk of dementia and persistent low mood, and damages the stress system.…

With normal use, the research shows no increased risk of brain tumours; with more than ten years of use there are weak…

Daily reading is associated with a lower risk of dementia and greater cognitive resilience in later life. Whether reading…

Your brain does indeed shrink with age, particularly in areas involved in memory and planning. High blood pressure accelerates…

A vitamin D deficiency is associated with a higher risk of cognitive decline and dementia, but whether correcting it with…

Green tea offers a modest but real benefit for concentration and working memory in healthy people, owing mainly to the…

Type 2 diabetes substantially increases the risk of dementia, and the younger you are at diagnosis, the greater that risk.…

Brain fog most likely has multiple simultaneous causes, of which a leaking blood-brain barrier in long COVID is the best…

Depression is strongly associated with a higher risk of dementia, though it remains uncertain whether depression causes…

Eating less or intermittent fasting probably shows a small positive effect on memory and concentration. The evidence is there,…

Excess weight harms your brain in multiple ways at once: less brain tissue, weaker connections and a higher risk of dementia.…

Oestrogen has a measurable influence on memory and concentration, and the decline during perimenopause is accompanied by…

High blood pressure in your forties demonstrably increases your risk of dementia later in life, and early treatment appears to…

Extra virgin olive oil as part of the Mediterranean diet has been linked to less cognitive decline in multiple studies, but…

Smoking accelerates brain ageing and increases the risk of dementia. Quitting smoking is one of the best-supported steps you…

Whether your brain ages faster than the rest of your body varies from person to person, but the consequences are significant:…

Years of too little exercise is associated with a clearly elevated risk of memory problems and dementia. Moving more, even…

Caffeine helps you stay more alert and focused when you are tired, but it does not make a well-rested brain smarter. If you…

NAD+ matters for your brain and declines with age. Whether topping it up via NMN (a substance your body converts into NAD+) or…

In healthy people, creatine has no demonstrable effect on dopamine in the blood. Positive signals so far come exclusively from…

Small studies occasionally show positive signals in depression, but an international guideline based on many studies concludes…

Creatine may ease cognitive complaints, but the effect depends heavily on your situation: people with chronic fatigue, sleep…

Creatine can improve your memory, but mainly if you are older, vegetarian, or your brain is under pressure. If you are a…

Long-term heavy drinking demonstrably damages the brain, in part irreversibly. Stopping helps, but after years of heavy use it…

Long-term stress harms memory through measurable changes in the brain, and early-life stress raises the risk of memory…

Large studies in people link the MIND diet to a lower chance of dementia, but the only large study in which people were…

Studies following people for years consistently show that mental challenge lowers the risk of dementia, but this is an…

Lifestyle can probably slow early-stage forgetfulness and sometimes partially improve it, but full reversal has not been…

Professional footballers who head the ball frequently have a considerably higher risk of dementia than goalkeepers or people…

Forgetting names around age 50 is normal and biologically explainable. It is not a reason for immediate concern, but exercise…

Yes, exercise genuinely works: for mild to moderate depression it is as effective as medication, for anxiety disorders it is…

Cognitive training has a demonstrable, albeit modest, benefit for people with Alzheimer's disease or mild dementia, but does…

A blood test for p-tau217 shows promising results as an early signal for Alzheimer's, but is not yet available as a routine…

Not every instance of memory loss is worrying, but certain signs deserve prompt medical attention: sudden deterioration, the…

Combining more physical activity with staying mentally active and eating a diet low in sugar and higher in omega-3 fatty acids…

Blood sugar, blood fats, and inflammation markers are best supported by the evidence if you want to age healthily. Alzheimer's…

Eating blueberries daily has a modest but consistent positive effect on memory and vascular health, particularly if you are…

Speaking two or more languages daily appears to protect the brain in later life, with the strongest evidence for people who…

Staying socially and physically active is probably your best lifestyle investment against dementia. The strongest results come…

Regular exercise demonstrably keeps your brain sharper, as long as serious cognitive decline has not yet set in. The…

Poor hearing is associated with a modest but real increased risk of dementia. Have hearing loss assessed and treated in good…

Yes, your brain cleanses itself largely during sleep, and deep sleep appears to play the most important role in this.…

Fish oil may make a modest contribution to attention and memory, but the evidence is not strong enough to recommend a pill…

Various lifestyle choices demonstrably lower your risk, but no single approach guarantees that you will prevent dementia.…

APOE4 substantially increases your risk of Alzheimer's disease, but at younger ages lifestyle factors such as blood pressure,…

Alcohol increases the risk of several types of cancer, most strongly for mouth, throat, oesophageal and liver cancer. Even at…

Whether glyphosate causes lymph node cancer remains unresolved after several large analyses. If you are occupationally exposed…

There are preliminary indications that higher linoleic acid levels are associated with a higher melanoma risk, but the…

Chronic inflammation is a proven driver of cancer: it promotes every step of tumour formation and makes tumours more resistant…

Colorectal cancer screening from age 50 and mammography from age 40 have the best evidence base for the average person; lung…

The best way to detect melanoma early is to check your skin regularly, know the ABCDE features, and consult a dermatologist if…

Yes, even one drink per day measurably increases cancer risk, particularly for breast cancer. No amount of alcohol has been…

Eating less red meat and processed meat probably lowers your risk of colorectal cancer; the association is strongest and best…

Cancer becomes more common with age because DNA damage accumulates, the immune system declines, and damaged dormant cells can…

Senescent cells initially protect against cancer, but when they accumulate they can actually promote tumour growth through…

Type 2 diabetes increases the risk of several cancers, including liver, pancreatic, uterine, and colorectal cancer. If you…

The vast majority of population research does not confirm a causal association between artificial sweeteners and cancer. There…

Working with pesticides is associated in multiple studies with an increased risk of several types of cancer, including…

For most cancer types, a healthy weight after diagnosis is associated with better survival, but note: unintentional weight…

Yes, a chronic hepatitis B or C infection strongly and demonstrably causally increases your risk of liver cancer. Get tested…

Processed tomato products are linked to a lower risk of prostate cancer, but whether lycopene is the cause is not certain.…

Burnt or heavily grilled meat contains substances that cause cancer in animal studies, but whether ordinary exposure…

Sitting a lot increases your risk of certain cancers, even if you exercise. In addition to moving regularly, try to reduce…

There is no evidence that fasting prevents cancer in people. Results from animal studies are promising but contradictory. If…

An H. pylori infection demonstrably increases your risk of stomach cancer, but the risk for any individual remains limited.…

Simply eating less fat probably offers no demonstrable protection against breast cancer. Those who want to reduce their risk…

There are indications that certain substances from plastic packaging, such as BPA and PCBs, are associated with a higher…

The HPV vaccine provides strong protection against cervical cancer, but works best when received before first sexual contact;…

Circumcision early in life is associated with a clearly lower risk of invasive penile cancer and a reduced likelihood of…

Night work probably increases the risk of breast cancer, and possibly of other types of cancer. If you have been working night…

Aspirin demonstrably protects against bowel cancer in people with a hereditary elevated risk (Lynch syndrome) and in people…

The pill demonstrably lowers the risk of ovarian and uterine cancer, but slightly raises the risk of breast cancer with…

If you already have sufficient vitamin D in your blood, extra supplementation probably does not help against cancer. If you…

Passive smoking increases your risk of cancer, with the strongest evidence for lung cancer. The risk is real but smaller than…

Smoking is causally linked to at least fifteen cancers outside the lung; quitting smoking reduces that risk, and the sooner…

Drinking green tea is safe and people who drink it develop cancer slightly less often, but whether the tea itself is the cause…

Drinking large amounts of sugary drinks is associated with a noticeably higher risk of certain cancers, especially early-onset…

Breast cancer can be hereditary, and if you recognise multiple cases in your family, it is sensible to discuss this with your…

A colonoscopy is not the only way to detect bowel cancer early. Stool-based tests, CT scans and sigmoidoscopy are recognised…

A large belly raises the risk of several types of cancer more than being simply overweight, especially in men. Having your…

Drinking coffee is consistently associated with a lower risk of liver cancer, and that association is better supported than…

Poor sleep, and sleep apnea and night-shift work in particular, is associated with an increased cancer risk. Whether you…

People with diabetes who take metformin may develop cancer and dementia less often, but the evidence is mixed and does not…

Prolonged inflammation is one of the most robustly supported risk factors for cancer. Well-known causes such as smoking,…

Participating in breast cancer screening may offer a small benefit, but the chance of unnecessary treatment or a…

Whether the PSA test is worthwhile depends on your personal risk. Men aged 55 to 69 with an elevated risk, such as a family…

Excess weight increases your risk of at least 13 types of cancer, including uterine, colorectal, breast and liver cancer.…

Even with light drinking your risk of mouth, throat, oesophageal and breast cancer is already measurably higher. A safe lower…

Drinking less alcohol meaningfully reduces your risk of several cancer types, although it takes years before the full effect…

Multiple large studies consistently show that high consumption of red meat, and especially processed meat, raises the risk of…

Not smoking, a healthy weight, regular exercise and little or no alcohol have the strongest and best-supported protective…

Eating more fibre, especially through whole grains, is consistently associated with a lower risk of colorectal cancer. Whether…

For people between 45 and 75 with an average risk, bowel cancer screening is worthwhile and widely recommended. It…

If you want to limit your health risks, stopping completely is the most well-supported choice. Major international health…

Yes, and this applies above all to processed meat: the association with colorectal cancer and cardiovascular disease is solid…

By not smoking, limiting alcohol, maintaining a healthy weight, and moving enough, you can meaningfully lower your risk of…

For healthy people without elevated risk, the added value of a full-body MRI has not yet been proven: many detected…

Cervical cancer screening (ages 21-65) and lung cancer screening (ages 50-80, 20+ pack-years) have the strongest evidence base…

Regular physical activity is associated with a clearly lower risk of several cancers in large population studies. Alongside…

Eating a lot of processed meat measurably raises your risk of colorectal cancer by around 18-21%. Eating less sausage and ham,…

There are early positive indications that yoga with meditation reduces DNA damage, but the evidence is still too limited for…

GDF11 rejuvenates certain tissues in mice, particularly the heart, but whether this works in humans has not yet been…

Mitochondrial mutations likely contribute to ageing, but exactly how large that contribution is, and through which mechanism,…

Your body actively repairs DNA damage through multiple well-studied mechanisms, but that repair is not always perfect and…

Senescent cells stop dividing and secrete inflammatory substances that damage tissues over time. They are necessary in youth,…

Senolytics no longer work only in mice: there is now first concrete evidence in humans, but the studies are small and lack…

Chronic inflammation demonstrably accelerates cellular ageing through a negative spiral that is difficult to break. The best…

Cells stop dividing because their chromosome tips wear down and they accumulate DNA damage: a protective mechanism that in…

Zombie cells accumulate as you age and accelerate ageing through inflammatory signals; how to tackle them is promising but…

A vitamin D deficiency is associated with greater DNA damage, especially in people with an additional risk factor. Make sure…

Scientists now distinguish more than ten concrete biological hallmarks of aging, from DNA damage and telomere shortening to…

Cells lose their capacity for self-repair through a combination of declining energy supplies, impaired DNA repair and the…

Caffeine inhibits important DNA repair processes while simultaneously having protective effects in certain cell types,…

Short-term eating less triggers a protective cellular clean-up process. If the restriction becomes too extreme or is…

Cells have three ways of cleaning themselves up. When all three falter, damaged cells accumulate, and that is linked to ageing…

There are biologically plausible indications that dehydration harms cells, but whether simply not drinking enough accelerates…

With each cell division, the tips of chromosomes wear down a little, until a cell permanently stops dividing. These halted…

Meditation appears to activate an enzyme that protects chromosome caps from ageing, although the studies are still too small…

Air pollution damages your cells from the inside through oxidative stress: fine particulate matter causes an excess of harmful…

Orderly cell death is an essential clean-up mechanism that keeps your body healthy, but balance is everything: too little…

Cells have two clean-up systems for damaged proteins: the proteasome and autophagy. Both become less effective with age, and…

Chronic alcohol use damages your DNA, disrupts how genes are read and increases the risk of several types of cancer. Drinking…

Diet can both protect and damage your DNA, but the protective effects of supplements often fall short in practice. Make sure…

Inflammation and cellular senescence reinforce each other in two vicious cycles, leading to tissue damage and age-related…

Senescent cells are damaged cells that stop dividing but continue to live and chronically inflame their surroundings. They…

Chronic stress accelerates the wear on your DNA protectors (telomeres) in a way that corresponds to years of extra cellular…

Oxygen deprivation damages cells through a chain of mechanisms: energy deficit, overstimulation of nerve cells, and an assault…

Sugar damages your cells through a chain of chemical reactions that harm proteins, cell powerhouses and tiny blood vessels.…

Animal studies show convincing signs of cellular rejuvenation through fasting, and the first studies in people point in the…

Smoking damages your DNA in multiple ways simultaneously, and some of that damage is permanent; quitting genuinely helps, but…

Free radicals arise naturally when your cells produce energy and, in small amounts, do useful work. Only when they overwhelm…

A cell has multiple systems that work together to stop division: molecular brakes from within, signals from neighbouring cells…

Your cells repair DNA damage continuously and systematically, but the system is not infallible: chronic overload or a defect…

Autophagy is a genuine part of the ageing process and plays a role in many age-related diseases, but the translation into…

Autophagy can be measured, but only in a laboratory using cells or tissue material. No reliable test is available for use at…

Telomeres protect your chromosome ends through a system of proteins that simultaneously prevents false alarms and harmful…

Telomerase keeps telomeres intact for longer by compensating for shortening during cell division, but in most body cells the…

Healthy adult body cells cannot lengthen their own telomeres, and no proven safe way to do so from the outside yet exists. Be…

Telomeres shorten because the copying process during cell division cannot fully reproduce the ends of chromosomes, and the…

Sirtuins play a clear role in ageing in animal research, but whether they are of any benefit to humans (through supplements or…

Fisetin demonstrably clears zombie cells in cell experiments and in animals, but whether this also works in people and is safe…

Genetics explains roughly one third of how long you live, so your parents give you a biological starting point, not a…

Quitting smoking, exercising regularly and eating plenty of vegetables demonstrably reduce DNA damage; antioxidant supplements…

Senolytics show impressive results in animal studies, but in people the evidence is too thin for use outside a research…

NAD+ is an indispensable molecule for energy, DNA repair and cell maintenance, and its levels measurably decline with age.…

Your stem cells do indeed decline with age: they repair tissue less effectively and become partly exhausted. Regular exercise,…

Epigenetics determines which genes are active and is, in principle, open to influence. In medicine, epigenetic mechanisms are…

Oxidative stress is a real biological process that causes damage to cells and contributes to ageing, but how large a role it…

Zombie cells clearly play a role in ageing, but no proven treatment yet exists for humans. Keep an eye on the field, but for…

You can promote autophagy yourself through fasting or temporarily eating significantly less, and probably through exercise as…

Your DNA and certain proteins in your blood give a useful picture of your predisposition to heart disease and other common…

There are serious indications that widely used emulsifiers and artificial sweeteners can disrupt the gut microbiome and may be…

Intermittent fasting can temporarily cause constipation, but in people who already suffer from constipation as a bowel…

At normal doses (around 5 mg per kilogram of body weight per day) gastrointestinal complaints are not to be expected, but at…

Eating an avocado every day likely increases the diversity of your gut bacteria, although the evidence comes primarily from…

Yoghurt and kefir have the most human evidence supporting a beneficial effect on gut health; for kimchi, kombucha and tempeh,…

Fermented food, and kefir and yoghurt in particular, likely has beneficial effects on gut flora and several health markers,…

Your gut flora changes over the years and is associated with inflammatory processes, immune function and possibly how long you…

A leaky gut barrier is associated with chronic inflammation and a range of diseases, from diabetes and joint complaints to…

Probiotics reduce IBS symptoms even without antibiotics, with Bacillus coagulans and Bifidobacterium strains having the…

Diet does indeed change your gut microbiome, but lasting change requires lasting adjustment of your dietary pattern; a…

For irritable bowel syndrome, 1 to 4 billion live bacteria per day, maintained for at least four to eight weeks, has been…

Probiotics can make a modest contribution in later life, but which product works best depends on what you want to improve. For…

Fermented products have the strongest evidence base for increasing gut bacterial diversity. Eating broadly varied meals also…

During the menopause, specific bacterial species in your gut shift and your gut bacteria process oestrogen less actively.…

Playing outside exposes your child to more bacteria, and one small study observed a change in gut microbiome, but whether that…

Your microbiome does change with age and is associated with health risks, but a reliable ageing test based on stool does not…

Yes, the gut flora of children differs markedly from that of adults, both in composition and in maturity. These differences…

A disrupted gut microbiome is associated with acne and eczema, although that association has not yet been proven to be cause…

Chewing well certainly helps form a smooth food bolus and increases saliva production, but whether it actually leads to better…

Drinking coffee daily is associated with higher levels of beneficial gut bacteria such as Bifidobacterium and Bacteroides, but…

Your gut microbiome can influence your memory and concentration through several routes, but most of the evidence still comes…

Bile acids are indispensable for proper fat digestion and the absorption of fat-soluble vitamins. If you suffer from greasy…

Smoking disrupts your gut microbiome and increases the risk of intestinal inflammation, gastrointestinal complaints and…

The individual components of bone broth, such as certain amino acids, show favourable effects on the intestinal wall in…

Your gut microbiome can influence inflammatory processes throughout your body via the gut wall. Eating more fibre and…

Your gut microbiome influences your sleep through substances it sends to your brain, and poor sleep in turn disrupts your gut…

The gut bacteria of people with excess weight differ measurably from those of lean people, but whether those bacteria are the…

A high-fat diet noticeably disrupts the gut microbiome: less bacterial diversity, more harmful species and a leaky gut wall…

Whether spending more time in nature improves your gut bacteria is a question the available studies cannot answer; if you want…

Certain gut bacteria produce substances that accelerate cellular ageing, while a diverse microbiome rich in fibre-fermenting…

There is no research whatsoever showing that apple cider vinegar improves digestion. If you want to use apple cider vinegar…

Yes, your gut microbiome can influence your hunger and eating behaviour via a direct connection to your brain. Eating more…

Eating a lot of sugar probably disrupts your gut microbiome and makes the gut wall more permeable, but it is the combination…

There are several indications that a healthy gut microbiome is beneficial for your skin, but how best to achieve that and…

Through its fibre and lignans, flaxseed has a plausible positive effect on the gut, but for the gut as a specific target the…

Your gut microbiome influences your heart health through metabolic by-products that can promote arterial hardening, high blood…

The bacteria in your gut change in recognisable ways with age and are linked to how healthily you grow old. The early evidence…

The appendix appears to play a real but modest role as a reservoir organ for gut bacteria, particularly in recovery after…

Intermittent fasting demonstrably changes your gut microbiome, but the effects are likely temporary if you stop; for healthy…

Your gut microbiome influences your cholesterol through bile acid conversion and the fermentation of fibres. Eating more fibre…

Polyphenols from berries and red wine have a positive influence on your gut bacteria, but the human studies are still small;…

A plant-based diet appears to be beneficial for your gut bacteria, but fermented foods perform at least as well in a direct…

Moderate regular exercise demonstrably improves your gut microbiome, but you need to keep exercising because the effect…

There are several recognisable signals, of which abdominal complaints such as persistent pain, diarrhoea, or constipation are…

Green tea has shown measurable positive effects on gut bacteria and the gut wall in small studies, but the studies are too…

Research shows that too little sleep harms the diversity and composition of your gut bacteria. The trends in people are…

Abdominal pain and bloating are a sign that your gut needs attention, but on their own they say little about how "unhealthy"…

Chronic heavy drinking demonstrably disrupts the gut microbiome, with consequences for the heart and liver. Moderate drinking…

For healthy people and people with metabolic syndrome there is reasonably consistent evidence that intermittent fasting has a…

Stress can really make your gut sick, from abdominal pain and unpredictable bowel movements to stomach complaints. If you have…

Probiotics contain live bacteria; postbiotics work with inactivated micro-organisms or their building blocks. Postbiotics are…

Garlic shows some signs of improving gut function in people, although the evidence is limited. The best-supported finding is…

Eating a lot of red and processed meat measurably increases your risk of colorectal cancer, although for most people the…

There are clear indications that the composition of your gut microbiome is associated with how long and how healthily you age,…

Your gut microbiome is probably linked to excess weight through multiple mechanisms, but a proven causal relationship in…

Your gut microbiome certainly changes as you get older, but whether that is harmful depends strongly on which direction that…

Leaky gut is a recognised biological phenomenon that is associated with various diseases, but whether it also causes those…

Prebiotics and probiotics are comparably effective for constipation; for depression and blood sugar, probiotics have a slight…

Whether artificial sweeteners truly disrupt your gut microbiome is not yet clear: studies contradict one another. Until there…

Your gut microbiome partially recovers after a course of antibiotics, but a full return to its original state is rarely…

A disrupted gut microbiome demonstrably throws your immune system off balance and increases the risk of chronic inflammation.…

There is a biologically plausible and, in animal research, robustly supported connection between your gut microbiome and your…

Fermented foods, and kefir and yoghurt in particular, have the strongest clinical support for a positive effect on the gut…

Fibre demonstrably feeds your gut bacteria, improves stool consistency and protects the gut wall. But how your microbiome and…

Probiotics genuinely help, but not for everything and not equally with every pill. The evidence is strongest for…

Fermented foods, particularly yoghurt and kefir, show positive indications for gut health; for most other products such as…

Commercial at-home microbiome tests are not clinically useful at this time: the advice is premature, the methods are not…

A high vascular age on the measurement is a serious signal: your risk of cardiovascular disease, dementia, and premature death…

Gum disease is clearly associated with higher blood pressure, and there is good evidence that it genuinely contributes to it.…

Erectile problems caused by poor blood flow precede a heart attack or stroke by an average of 2 to 5 years. If you have this…

Testosterone therapy does not demonstrably reduce the chances of dying from any cause, but does not increase them either. Do…

A higher resting heart rate is clearly and consistently linked to a higher risk of premature death, even after taking other…

Eating more salt does not lead to a longer life. At the individual level, it demonstrably increases the risk of cardiovascular…

Semaglutide and tirzepatide demonstrably reduce the chance of heart failure worsening in people with a specific form of heart…

A good wearable measures resting heart rate reliably, but HRV scores and readiness are less accurate than they appear. Use…

Starting as early as possible pays off: LDL damage accumulates from childhood, and every year that your LDL remains lower…

Calcium supplements may be associated with an increased heart risk, but not all studies confirm this. It is best to get…

Targeted treatment to reduce inflammation, particularly with low-dose colchicine, measurably reduces the risk of serious heart…

In type 2 diabetes, GLP-1 medications offer well-supported protection for the heart, blood vessels, and kidneys; there are…

Taurine in energy drinks does not appear to be harmful in the short term, but the real risks lie in the caffeine and sugar. If…

No method exists to selectively remove microplastics from your blood vessels, and research into this has not been conducted…

Serious gum disease is demonstrably associated with a higher risk of cardiovascular conditions and high blood pressure; that…

Even 2 to 3 sessions per week is associated with measurable health benefits; those who go 4 or more times appear to benefit…

Omega-3 reliably lowers blood fats, but the evidence that it helps you live longer or stay healthier is limited. If you…

Sitting a lot increases your risk of heart failure and heart-related mortality, even if you exercise regularly. Just 30…

Early arterial hardening can partly be reversed, especially with strong LDL reduction using statins or newer medicines. The…

Black seed oil has shown measurable effects on blood fats, blood pressure and inflammatory markers in multiple meta-analyses,…

The best available research shows that nattokinase has no demonstrable effect on arterial hardening or blood pressure after…

Menopause demonstrably increases your risk of cardiovascular disease, primarily through unfavourable changes in fat…

A structurally high resting heart rate, certainly above 80 to 90 beats per minute, is associated with a clearly higher risk of…

High blood pressure and inflammation reinforce each other, and higher levels of inflammation signals in the blood mean a…

Chronically poor or insufficient sleep is associated with an increased risk of cardiovascular disease, including stroke. If…

Yes, sleep deprivation demonstrably raises blood pressure in adults. Seven to eight hours of sleep per night is the most…

There is a consistent association between gum disease and a higher risk of heart disease, although it has not been proven that…

A low-carbohydrate diet raises LDL cholesterol modestly in most people, and sometimes substantially. If you already have…

Chronically sleeping too little demonstrably increases your risk of a heart attack and high blood pressure, and genetic…

Measuring ApoB is worthwhile for more people than current guidelines suggest: not only in cases of elevated blood fats, but…

Too many LDL and apoB particles sets off a well-established chain reaction that gradually clogs arteries. Having your apoB…

An ApoB level that is too high is very treatable, and several proven agents are available. Statins are the first choice; PCSK9…

There is no fixed 'healthy' ApoB value, but below 82 mg/dL the risk of a stroke already decreases measurably. ApoB offers…

ApoB gives a more accurate picture of your cardiovascular disease risk than standard LDL cholesterol. Ask your doctor to also…

For detecting atrial fibrillation, a smartwatch ECG can be useful, especially as a complement to medical monitoring. For other…

Greater optimism is linked, across several large, long-running studies, to a considerably lower risk of dying from heart and…

The Mediterranean diet most demonstrably lowers your risk of heart and blood vessel disease. Individual supplements do not help.

High blood pressure at night is more dangerous than high blood pressure during the day. Have a 24-hour measurement taken if…

Omega-3 supplements do not help against heart rhythm disorders and at higher doses actually increase the risk of atrial…

Losing weight noticeably lowers your blood pressure and improves your cholesterol profile, but which value improves the most…

A mildly elevated cholesterol is not automatically harmless: the overall picture, including triglycerides and lipoprotein(a),…

Prolonged stress measurably increases your risk of heart and vascular disease, particularly through work-related stress…

Atrial fibrillation substantially raises your chances of dying, heart failure, and stroke, and calls for active treatment.…

Palpitations are usually harmless, but can also be the beginning of a serious cardiac arrhythmia. If you also experience…

Measuring at home gives a more reliable picture than a single reading at the doctor's office: measure at least seven days,…

Raising HDL through lifestyle is possible, but your genes set the ceiling. Lowering triglycerides through less sugar and…

A high hsCRP value points to chronic inflammation and predicts a clearly elevated long-term risk of cardiovascular problems,…

A larger waist is linked to a higher risk of early death, diabetes and heart disease, independently of overall body weight. If…

Folate reduces stroke risk by around 16%, but most likely only when there is a deficiency. For broader cardiovascular risk and…

For people with moderate to severe heart failure, CoQ10 has the most convincing evidence; for energy or sports performance in…

Loud snoring is linked to serious health risks: hardening of the arteries, a higher chance of dying after a heart attack, and…

Yes, climbing stairs genuinely does something for your heart. Climbing roughly 50 to 100 steps a day is associated with fewer…

Industrial trans fats are demonstrably harmful to your heart and blood vessels, even in small amounts. Avoid them by checking…

Fish oil reliably lowers triglycerides and can slightly reduce the risk of a heart attack in people with existing heart…

For a first impression of your vascular health, an ApoB blood test is the simplest and most accessible step; a CAC scan adds…

Lowering blood pressure genuinely works: your risk of stroke and other cardiovascular problems demonstrably decreases.…

A normal LDL value does not give a complete picture of your cardiovascular risk. Ask your doctor about your remnant…

Lp(a) is a hereditary risk factor for cardiovascular disease that is independent of your LDL. Effective treatments are still…

A structurally high or strongly fluctuating blood pressure substantially increases your risk of stroke, heart attack and…

Garlic supplements measurably lower blood pressure in people with hypertension and have a modest favourable effect on…

High homocysteine is associated with a greater risk of cardiovascular disease, but whether it is the cause is not certain.…

Your triglycerides are a meaningful risk indicator, especially in combination with abdominal fat or a high blood sugar level.…

A higher HRV is associated with better health and greater resilience. Slow breathing is the most accessible and best-supported…

A resting heart rate between 60 and 80 beats per minute is considered generally normal, but lower is fine for active people,…

Dark chocolate with a high cocoa content appears to be good for your heart, but the evidence is still based on studies that…

For most people, a daily handful of nuts is a well-supported choice for a healthier heart. Anyone wanting to lose weight or…

Olive oil, and extra-virgin olive oil in particular, is well supported as protective for the heart and blood vessels,…

Eggs are not automatically bad for your cholesterol; the rest of your diet, especially the amount of saturated fat, carries…

Two to three cups of green tea a day fits well into a healthy lifestyle and is probably safe, but do not take concentrated…

Eating a lot of salt is clearly harmful to your blood pressure and your heart, and the risk grows with the amount consumed.…

For people at increased heart risk, the Mediterranean diet is the best-supported dietary choice currently available. Both…

For most healthy adults, three to four filtered cups per day is associated with a beneficial effect on the heart and blood…

For cardiac patients in rehabilitation, HIIT produces greater fitness gains on average than regular cardio, but this does not…

Whether a daily aspirin is smart or dangerous depends entirely on your age and medical profile. Take aspirin only on a…

Whether statins are worthwhile depends on your personal risk. At a calculated 10-year risk of 10% or higher and at least one…

For people between 40 and 75 years old in a grey zone regarding statins, a calcium score is a well-supported tool for making a…

Belly fat is a serious risk factor for cardiovascular disease, heart failure, and early death, and the risk grows the longer…

ApoB consistently predicts cardiovascular disease better than LDL cholesterol. If you want to know how high your risk truly…

People with serious gum disease show clearly higher risks of heart attack, stroke and premature death in large-scale research.…

Coffee (3 to 4 cups per day, preferably in the morning and without much sugar) is associated with less early death in large…

Regular sauna use is consistently linked to a lower risk of early death and heart problems in studies following large numbers…

In perimenopause, FSH rises first and inhibin B falls, while oestradiol initially remains normal or even elevated. A single…

Soy isoflavones may reduce hot flushes somewhat, but the effect is modest and the studies contradict each other enough that…

Omega-3 supplements have not been shown to prevent postnatal depression, and as a treatment the evidence is still too…

These medicines restore beta cells in rodents, but whether this also happens in people has not yet been demonstrated. Until…

Characteristic features are an early decline in AMH and inhibin B, followed by a rise in FSH and a late sharp fall in…

Your hormone levels follow a recognisable pattern throughout the cycle: oestrogen and progesterone rise and fall at set…

In PCOS, elevated male hormones, a disrupted LH-to-FSH ratio, and a reduced response to insulin are the most reliably…

There is no universal standard for hormone levels in women: they depend on age, cycle phase, and measurement method. Always…

For healthy pregnant women, fasting does not appear to increase major risks such as preterm birth or low birth weight, but…

Locally applied oestrogen cream demonstrably reduces the risk of recurrent urinary tract infections in women after the…

Vaginal oestrogen does more than relieve symptoms: it roughly halves the risk of recurrent urinary tract infections and…

Hormones, and cortisol in particular, play a demonstrable role in mental health complaints in a proportion of patients, but…

Hormone tests during perimenopause are difficult to interpret: AMH is the most practical option, but does not reliably predict…

During menopause, the hormones measured most commonly are FSH, LH, oestradiol, progesterone, testosterone and AMH; elevated…

After menopause, the lipid profile demonstrably worsens due to the decline in oestrogen. Regular exercise and moderately…

There are several well-supported options depending on your life stage: for women after menopause, transdermal testosterone has…

Hormones do influence ageing, but do not control it entirely. Fat distribution, muscle mass and inflammatory processes are all…

An adrenal cocktail does not work, because the condition it is supposed to treat does not exist as a recognised diagnosis. If…

Do not use it. There is barely any human evidence that fadogia agrestis raises testosterone, it is not authorised for sale in…

Hormone therapy relieves menopausal symptoms well and shows positive indications for bones and metabolism, but the effects on…

The two randomised studies in men show no effect on testosterone; the only small study that did find a rise in men had no…

Do not use it, even though it probably does raise your testosterone. The European food safety authority EFSA found signs that…

The cyclical pattern of your symptoms is the best distinguishing factor: if they occur only in the two weeks before your…

Excess weight disrupts your hormones in multiple ways simultaneously, and this is not a coincidental association. In men,…

A calorie-rich diet high in animal protein and low in fibre increases the likelihood of earlier puberty in girls, especially…

Body fat has a considerable influence on your hormonal balance as you age: more abdominal fat disrupts insulin sensitivity,…

Sex hormones likely contribute to women's longer lifespan, but they do not fully explain the difference. Social factors also…

High caffeine intake raises your cortisol, especially during stress or exercise and later in the day; you partially adapt to…

A vitamin D deficiency disrupts hormone levels, primarily through a rise in parathyroid hormone PTH, which affects your bones,…

More muscle mass improves your insulin sensitivity and is associated with more favourable hormone values after training, but…

After delivery, the brake on the immune system lifts abruptly, which can trigger inflammation in women with an underlying…

Low blood sugar immediately raises stress hormones and causes symptoms such as trembling, sweating and irritability. People…

Chronic sleep deprivation and frequent insomnia have been linked in several large studies to a lower chance of conception and…

Declining testosterone measurably accelerates ageing of muscles, bones and sexual function, but the links to mood and skin are…

Both too little and too much iodine can disrupt the thyroid; make sure you get enough each day, but avoid large supplements…

Fluctuating oestrogen levels disrupt brain systems that regulate anxiety and mood, causing some women to experience anxiety…

There is solid evidence that thyroid hormones, sex hormones and stress hormones all play a role in dementia risk. The evidence…

After stopping the pill, your hormone balance generally recovers within a few weeks to months, regardless of how long you have…

Low progesterone levels can cause symptoms before menopause, but whether it is the true cause or a secondary finding has not…

Sunlight affects multiple hormones simultaneously: it stimulates vitamin D and beta-endorphin, suppresses melatonin, and can…

There is a clear association between thyroid problems and depressive symptoms, although the precise direction of influence has…

Yes, men need oestrogen for strong bones, healthy blood vessels, and fertility. Both a deficiency and an excess are harmful,…

Pregnancy and breastfeeding bring measurable, sometimes long-lasting hormonal changes, of which the genital and urinary…

Extreme or prolonged stress that disrupts the menstrual cycle can harm fertility; whether ordinary daily stress causes…

Hormone disruptors are demonstrably present in a great many everyday products and are measurable in the human body. Complete…

Fasting probably improves your insulin levels, but most studies are small and short-term. Eating early in the day appears to…

Yes, exercise demonstrably raises several hormone levels in people over 40. The strongest practical benefit lies in muscle…

Even a temporary, substantial calorie deficit can disrupt sleep and reproductive hormones in healthy women; the timing of your…

Your gut microbiome drives multiple hormones through enzymes, fermentation products and bile acids, ranging from oestrogen to…

Regular heavy drinking demonstrably disrupts multiple hormonal axes simultaneously, with consequences for fertility, stress…

Studies show that a healthy weight is measurably linked to better fertility. Whether changing your lifestyle actively…

Yes, a normal test result does not rule out thyroid-related symptoms. If you continue to have symptoms after a normal result,…

Poor sleep measurably disrupts your hormones, but 'permanently' is too black and white: with short-term sleep deprivation much…

Chronically high cortisol demonstrably increases deep belly fat and disrupts blood sugar regulation, which over time promotes…

Chronic stress noticeably dysregulates your cortisol system: your daily rhythm flattens, your immune function, sleep and…

Red clover may slightly reduce hot flushes; for black cohosh the evidence is contradictory. Both products may be an option if…

Avoiding smoking, eating less red meat, and eating more citrus fruit and oily fish appear to have a favourable influence on…

Hormone therapy works best against hot flushes and night sweats. Those who cannot or do not wish to use it can choose from…

The most common menopausal complaints are joint and muscle pain, fatigue and sleep problems; hot flushes are the most…

Menopause increases the risk of joint pain and osteoarthritis in most women; it helps to avoid excess weight, stay active, and…

Your growth hormone does indeed decline sharply with age. Reversing that with hormone injections offers little benefit in…

Testosterone is a physiologically relevant hormone for women, with the strongest evidence for sexual desire and sexual…

During the menopause transition, your body composition changes profoundly: more fat mass, less muscle and more dangerous…

Chronically elevated cortisol accelerates muscle loss and disrupts your metabolism, and that effect is real. Good sleep and…

If, alongside listlessness, you also have other complaints such as weight gain, feeling cold, or mood problems, blood tests…

In the long run, menopause increases your risk of cardiovascular disease and bone loss, and that effect is greater with an…

Testosterone genuinely declines in men with age. Testosterone therapy is well supported only in men with established…

Hormone therapy is worthwhile for menopausal symptoms and bone protection, but safety depends strongly on when you start,…

A decline in libido after 40 is normal but not inevitable. For men with a confirmed low testosterone level and associated…

For healthy older adults without a hormonal disorder, DHEA offers little benefit and is not without risk. If you have a…

The male menopause is genuinely real, but it progresses so gradually that many men do not recognise their symptoms as…

Perimenopause brings symptoms caused by hormonal fluctuations, ranging from hot flushes and sleep problems to bone loss and…

Red clover isoflavones and black cohosh have the strongest evidence for reducing hot flashes; soy isoflavones also help to…

No interventions have yet been proven to reliably improve sperm quality in men over 40; antioxidants show a signal but the…

Testosterone can be worthwhile for men over 50 with a medically confirmed testosterone deficiency, but it is not a treatment…

Your immune system ages in measurable ways: it responds less effectively to new threats and maintains a smouldering…

Your immune system ages in recognisable ways: exhausted immune cells and smouldering inflammation are clearly visible…

Regular sauna use produces measurable changes in your immune system, but whether it actually makes you get sick less often has…

Some supplements genuinely support your immune system, but the effect is greatest when you have a deficiency: so first check…

Nutrition has a clear influence on the immune system: deficiencies weaken your defences, and correcting a demonstrable…

A past coronavirus infection can temporarily disrupt the immune system, and in Long COVID possibly for an extended period. If…

The thymus is indispensable for a well-functioning immune system, but inevitably shrinks with age. How this can be…

Creatine influences immune cells via a specific switch, but whether the outcome is favourable or unfavourable depends strongly…

Quercetin has a clear anti-allergic effect in laboratory research, and a small randomised study in humans shows improvement in…

Covid-19 has measurable, lasting effects on the immune system, including in people who do not have Long Covid symptoms. How…

Prolonged antibiotic use disrupts gut bacteria, and that disruption can influence your immune system, but how strongly this is…

The clearest signs of a weakened immune system are recurrent or unusually severe infections, but skin problems, autoimmune…

Several factors demonstrably weaken your immune system: deficiencies in vitamin A, zinc, and iron are the best supported, but…

The immune system demonstrably ages, and there are promising avenues for slowing that process, but no single approach has been…

Moderate exercise (sessions up to 45 minutes) is good for your immune system and is associated with fewer infections. Only…

Ageing weakens the immune system in several ways simultaneously, making infections more dangerous. Keep vaccinations up to…

Eating more fibre has a clear biological mechanism, but in healthy people it does not automatically lead to a measurably…

Yes, too little sleep demonstrably weakens your immune system and increases the risk of infections and chronic inflammatory…

Spending more time outdoors may support your immune system as you get older, mainly through improved vitamin D production, but…

The flu shot demonstrably works less well in older adults than in younger people, but high-dose and other improved vaccines…

Your immune system demonstrably weakens with age, but vaccinations remain worthwhile and a good diet can limit further decline.

There is a clear and well-defined connection: autoimmune diseases of the thyroid arise because the immune system attacks the…

How well you respond to a vaccine depends on your genetic predisposition, age, the condition of your immune system, and any…

Sunlight influences your immune system beyond the vitamin D effect, through hormones, neuropeptides, and shifts in immune…

Smoking structurally damages your immune system and the damage can be lasting, especially with long-term smoking. Quitting…

T-cells are the conductors of your immune system, and they decline in number and diversity as you age, largely because the…

Omega-3 from fish oil lowers inflammation markers in the blood and has the strongest evidence in rheumatoid arthritis. The…

Chronic sleep deprivation demonstrably raises inflammatory markers in your blood and is linked to diseases such as…

Air pollution disrupts your immune system in several ways at once: a greater chance of allergic reactions, less resistance to…

After an infection, multiple biological processes can continue to smoulder simultaneously, but which mechanism plays the…

Too little sleep demonstrably makes your immune system more vulnerable, including to infections and vaccinations. Make sure…

There are preliminary indications that regular sauna bathing may have a beneficial effect on your immune system, but the…

Yes, an overactive immune system can cause serious harm, ranging from chronic autoimmune diseases to life-threatening cytokine…

Loneliness disrupts your immune system in multiple ways simultaneously: more inflammation, reduced antiviral defence, and…

Kimchi and other fermented products can improve your gut microbiome and lower inflammatory markers, but whether that actually…

A blood test can partially map the immune system, but the results are only meaningful when a doctor interprets them in the…

Melatonin has clear effects on the immune system in animal and laboratory research, but whether supplements genuinely improve…

Older adults are more susceptible to influenza due to a combination of an ageing immune system, chronic diseases, and…

Excess weight structurally raises your inflammation levels through multiple biological pathways. Exercise, and strength…

Consistently eating too much sugar disrupts the gut barrier, drives chronic inflammation, and locks immune cells into a state…

Yes, your immune system and heart age at measurably different rates, and an ageing immune system is more strongly linked to a…

Beta-glucan demonstrably activates parts of the immune system, but the evidence that a supplement genuinely protects healthy…

A cytokine storm is a life-threatening syndrome in which the immune system reinforces itself in a spiral of inflammation that…

For flu there is reasonable evidence that green tea catechins help; for most other infections the evidence is still limited to…

A low-calorie diet can weaken your immune system through deficiencies in minerals such as magnesium, disrupted gut bacteria…

Cold showering does not demonstrably strengthen your immune system in the short term, but people who do it regularly do report…

Chronic excessive alcohol use weakens your immune system on multiple fronts simultaneously and increases the risk of serious…

Fasting lowers inflammatory markers and has measurable effects on the gut microbiome that appear to be beneficial for the…

Taking vitamin C daily does not protect most people against colds, but does make a cold somewhat shorter and milder. Intensive…

Eating enough protein helps your immune system in later life. Aim sustainably for at least 1.0 to 1.2 grams per kilogram of…

Prolonged stress demonstrably lowers your immune system: fewer active immune cells, a weaker response to vaccines and a…

Regular, moderate exercise demonstrably lowers inflammatory markers such as CRP and IL-6; training too intensely can reverse…

Vitamin D genuinely helps your immune system, but the benefit of taking extra only really applies if you are deficient. If…

Your immune system demonstrably weakens with age, but eating healthily and exercising can reduce the smouldering inflammation…

Regular, moderate exercise helps your immune system by reducing smouldering inflammation. Suddenly training very hard without…

Sleep deprivation demonstrably weakens your immune system: sleeping fewer than six hours significantly increases your…

LDN shows positive signals as an anti-inflammatory agent in small studies and cell research, but the evidence in humans is…

For healthy ageing, the flu vaccine (high dose), the pneumococcal vaccine, the shingles vaccine, and the RSV vaccine are well…

Zinc is useful for your immune system if you have a deficiency or belong to a risk group, such as older adults or severely…

Curcumin has a biologically plausible anti-inflammatory effect, but the clinical results are mixed. If you want to try it,…

Inflammaging is a smouldering, chronic inflammation that increases with age and is associated with frailty, muscle loss and…

Correcting vitamin and mineral deficiencies is the best-supported step for maintaining immune function. For more far-reaching…

PCC1 shows in mouse studies that it can clear out aged and damaged cells. There are no studies in people yet.

Walking in the forest regularly measurably reduces anxiety, low mood, and stress. There are positive signals for blood…

Exercise and stable housing for homeless people have the strongest evidence base; antidepressants demonstrably work for severe…

A few supplements have reasonably solid backing after forty: calcium plus vitamin D for bone protection, B vitamins and a…

Vitamin E has the best evidence base, particularly for asthma in children. For most other applications the indications are…

Whether magnesium works for you depends strongly on which form you take and how high your dose is. Preferably choose an…

NAD supplements demonstrably raise NAD levels in your blood, but whether you actually benefit from that remains uncertain. If…

For endurance exercise lasting longer than an hour and a half, a drink containing sodium and carbohydrates is worthwhile; for…

In Europe the limit is 250 mg of elemental magnesium per day from supplements (350 mg in the United States), although more…

Magnesium glycinate is well absorbed, but for most healthy people it is not demonstrably better than citrate. For those with…

Baking soda (sodium bicarbonate) reduced fatigue in trained men who had fasted and then exercised, but this was found in only…

There are serious indications that GLP-1 agonists such as semaglutide can curb cravings for alcohol and nicotine, but clinical…

The available research gives no indication that GLP-1 medications cause suicidal thoughts; several large studies actually…

Whether gradual tapering is better than stopping abruptly is not yet known, but stopping abruptly leads to weight regain and…

Semaglutide causes digestive complaints, mainly nausea, in one in four users; these usually resolve over time. Rarer signals…

Semaglutide reduces the craving for alcohol and the number of heavy drinking episodes in people with an alcohol use disorder.…

For most peptide supplements that you simply swallow, absorption into the bloodstream is so low that little benefit can be…

The sauna makes you sweat, not slim: the weight loss is temporary fluid loss that disappears as soon as you drink again. If…

Stem cell therapy may be able to slow the symptoms of rheumatoid arthritis, but it does not cure it. The research is still too…

Unregulated stem cell treatments at foreign clinics carry real risks, including infections, tumour formation and financial…

For physical frailty in older adults there is one positive study in people. For all other ageing-related applications it is…

Mesenchymal stem cells appear safe in the short term for frail older adults and do reduce certain markers of inflammation in…

For weight loss, the pill (25 mg daily) and the injection (2.4 mg weekly) are comparably effective. If you have diabetes there…

Magnesium bisglycinate and magnesium glycinate are two names for the same supplement. Whether it is absorbed better than…

Orforglipron works well for blood sugar and weight, but in obesity it is probably less powerful than injectable Ozempic and…

For a mild attack, start with ibuprofen or paracetamol; for severe attacks, choose a triptan as early as possible in the attack.

In animal research AKG clearly extends lifespan, but solid evidence in humans is still lacking. Wait for the results of the…

Berberine patches show interesting results in laboratory and animal research for wounds, eczema, psoriasis and joint…

Berberine can influence the blood levels of certain medications, although the clinical significance is unclear in most cases.…

This type of study can reliably measure the effects of several treatments at the same time. Whether the findings can be…

Psilocybin has more supporting evidence and is safer than ibogaine. Ibogaine carries a real risk of serious, potentially fatal…

Research shows that ibogaine reduces drug craving and withdrawal symptoms. The heart risks are serious and well documented, so…

Peptides are small protein fragments with a wide range of functions in the body, from hormones to defence substances. As a…

A longevity clinic can offer you interesting measurements of your health markers and a good exercise programme. For most…

Microdosing with Ozempic has not been studied as a weight-loss method; the only small study using low doses shows an effect on…

There is no evidence that a spermidine supplement does the same thing as spermidine from food; supplements may be neutralised…

No study directly compares a NAD+ infusion with an oral NMN pill, so an advantage of the infusion has not been demonstrated.…

Rapamycin shows measurable improvements in immune function and cellular ageing markers in people. Whether it also extends…

With GLP-1 medications you do indeed lose muscle mass alongside fat, but you can largely limit this by combining resistance…

For blood sugar regulation in type 2 diabetes, 500 mg three times daily (1500 mg per day) for at least 8 to 12 weeks is the…

Research points to 300-600 mg per day as the effective range for stress, anxiety and athletic performance, but the quality of…

There is no established daily dose of CoQ10 for healthy people. The form on the label determines how much your body absorbs: a…

In people with diabetes, metformin shows clear health benefits. Whether it also slows ageing in healthy people is being…

Klotho gene therapy shows promise in mice and cells, but there are no human data yet. The available sources say nothing at all…

For specific applications, such as pain following knee surgery and possibly improved lipid levels, WBC shows small positive…

A NAD infusion has no proven advantage over cheaper oral supplements, and even those show barely any demonstrable effect in…

Ergothioneine shows a positive signal in a small study of older adults with memory complaints, but it is too early for firm…

Medicinal mushrooms such as reishi show promising effects in the lab, but convincing evidence from studies in people is still…

Shilajit has shown positive results for specific goals, such as testosterone in men aged 45 to 55 and bone healing, but it…

There are preliminary signs that earthing may improve pain, fatigue and sleep, but the studies are still too small and too…

For now, colostrum has the strongest indications as an aid against respiratory tract infections in athletes; for most other…

There are signs that the method can dampen the body's inflammatory response, but the studies are small, and for stress, mood,…

Liposomal vitamin C reaches higher blood levels than regular vitamin C, but whether that translates into real health benefits…

Ubiquinol is not automatically better than regular CoQ10: the formulation, such as soft-gel or water-soluble, matters more…

St. John's wort lowers the blood levels of dozens of medications and can have serious consequences, such as transplant…

Several supplements can strengthen or weaken the effect of blood thinners; always mention them to your pharmacist or doctor…

Anyone who takes more than 25 mg of elemental zinc per day over a prolonged period runs a real risk of copper deficiency,…

There is no human research identifying an optimal time to take fisetin. What the available animal research makes clear is that…

For healthy people without kidney disease, creatine monohydrate at normal doses is not harmful to the kidneys, although it can…

Yes, too much magnesium can be dangerous, although serious toxicity through ordinary supplements is rare in people with…

A loading phase is not necessary, but it does speed up the build-up of creatine in your muscles. Choose a loading phase if you…

There is no fixed 'correct dose' of curcumin: for joint pain, less than 1000 mg per day works just as well as more, but for…

The form of vitamin B12 matters less than the dose: when correcting a deficiency, what counts above all is taking enough. When…

Oral glutathione measurably raises levels in blood and cells, so it is not entirely pointless. Whether that rise translates…

NMN and NR raise NAD+ equally well, so the choice between the two probably makes no difference to the end result. Whether that…

More important than the timing: several regulators, including the RIVM, advise against ashwagandha because of risks to the…

For the skin, hydrolysed collagen peptides (2.5 to 5 grams per day for at least 8 to 12 weeks) are the best-supported option.…

Zinc picolinate and zinc histidine have the strongest independent evidence for good absorption, but all comparative studies…

Creatine monohydrate works at least as well as more expensive alternatives and is the most thoroughly documented safe choice.…

Ordinary curcumin without any addition is barely absorbed by the body; choose a product with piperine (black pepper extract)…

Magnesium citrate has the strongest evidence for absorption into the body. Magnesium oxide, the cheapest option, demonstrably…

Intermittent fasting improves health markers such as weight and insulin sensitivity, but whether it also makes you live longer…

Fasting demonstrably increases the self-cleaning function of your cells, but watch out for muscle breakdown during prolonged…

Moderate heat briefly damages cells, but simultaneously triggers a repair response that makes the cell more resilient.…

Red light therapy has a biologically plausible effect on cells, with positive clinical indications for pain and recovery, but…

Whether echinacea helps with the common cold depends strongly on which preparation you use. Standardised products made from…

Metformin has a reasonable evidence base for specific groups without diabetes (prediabetes, PCOS, overweight with insulin…

Metformin causes gastrointestinal complaints such as diarrhoea, nausea and vomiting in a substantial proportion of users.…

Retatrutide causes gastrointestinal complaints in many users and a temporary increase in heart rate; serious side effects were…

Indirect comparisons suggest that retatrutide produces greater weight loss than semaglutide (Ozempic/Wegovy), but the drug has…

There is no proven hourly threshold for activating autophagy in humans. If you use this as a reason for a fasting pattern, be…

Combining creatine with caffeine powder adds nothing to your performance and increases the risk of gastrointestinal…

Creatine monohydrate is well supported for strength sports and its safety profile in healthy adults is reassuring, but safety…

Current research shows that creatine does not raise DHT and has no effect on hair follicle health. There is no need to avoid…

Rapamycin is not present in food and cannot be obtained naturally through eating. If you want to learn more about it in the…

There is no established age at which NAD+ supplementation becomes worthwhile. Studies focus on middle-aged and older adults,…

The combination of NAD+ supplements, particularly nicotinamide, with platinum-based chemotherapy is the most concrete reason…

NAD+ supplements raise your NAD+ levels, but whether that translates into any health benefit has not been proven, and in the…

Taking 600-900 mg of a NAD supplement per day raises your NAD levels and provides some benefit for endurance, but long-term…

Most doctors will not prescribe rapamycin to healthy people to slow ageing, simply because the evidence for doing so is still…

Rapamycin is a powerful drug with serious side effects, including reduced immune function and blood sugar disturbances, and is…

Rapamycin itself shows no measurably greater direct liver damage than alternative treatments in studies. The related drug…

Hormesis is a well-described biological principle: a low dose of stress can make your cells more resilient, provided the dose…

For the most widely studied application, the heart, vitamin E demonstrably does not work; for skin and fertility the evidence…

Whether a supplement stack is smart or dangerous depends on which substances you combine and whether you also take medicines.…

Early studies in older adults show that GlyNAC can simultaneously improve multiple signs of ageing, from muscle strength and…

Plasma exchange clearly works in mice, but in humans there is still no evidence whatsoever of efficacy or safety. Do not be…

HBOT shows interesting signals in small, early studies regarding telomere length and cerebral blood flow, but the evidence is…

Regular blood donation is safe for many people, but it can deplete your iron stores, especially if you menstruate or donate…

Taking iron clearly helps if you have a deficiency or anaemia, but is pointless and potentially risky if that is not the case.…

Quercetin shows promising signals in the laboratory and in animals, but in humans there is not yet solid evidence. Taking…

For people with cardiovascular disease, kidney disease, or fatty liver disease, GLP-1 medications offer proven benefits that…

Daily multivitamins appear to offer some protection for the memory of older adults, but for most other aspects of healthy…

For people with diabetes, metformin has a reasonably well-supported health benefit, but as an anti-ageing agent for healthy…

Rapamycin works in mice, but whether it also leads to a longer and healthier life in humans has not yet been demonstrated.…

For healthy adults under 75, the evidence for supplementation is weak, but for people aged 75 and older, those with…

NMN and NR demonstrably raise NAD+ in your blood and appear to be safe, but whether you will notice any benefit in muscle…

BPC-157 shows promising results in animal research for tissue healing, but has barely been studied in humans and its long-term…

Ashwagandha demonstrably lowers the stress hormone cortisol, but whether it also makes you actually feel less stressed has not…

Taurine supplements as a means of slowing ageing have not yet been proven in people. The results from animal studies are…

For humans there is no convincing evidence that resveratrol supplements do anything against ageing; the animal research is…

Spermidine has a well-supported mechanism of action and promising results in animal research, but evidence that a supplement…

The idea is biologically sound and produces impressive results in mice, but whether it works and is safe in people remains…

Meditation has a moderate but well-demonstrated effect on depression, anxiety and pain, and can safely be combined with other…

For most healthy people, occasional cold water swimming is probably safe. Do you have cardiovascular disease or high blood…

Interval walking demonstrably delivers more than ordinary walking: better fitness, stronger legs and lower blood pressure, and…

Tai chi demonstrably helps older adults reduce falls and improve balance and walking ability. In mild cognitive decline, a…

Studies show that qigong helps older people with balance, muscle function, physical ability, and probably also thinking and…

Myostatin inhibitors demonstrably produce larger muscles, but in primates this does not translate proportionally into greater…

Yes, the menopause accelerates muscle loss, and postmenopausal women lose more muscle mass than men of the same age. Strength…

Creatine works best in combination with strength training: optionally start with a loading phase of 20 grams per day for 5…

For strength and muscle mass during high-intensity training, creatine monohydrate (3 to 5 g per day) has the strongest…

The combination of sauna and ice bath demonstrably lowers cortisol and promotes blood flow after exercise, but whether it…

An ice bath cools men and women equally quickly in cases of heat stroke, but whether the effect on muscle recovery is equally…

An ice bath helps athletes after hard training: less muscle soreness, faster recovery of explosive power, and a reduced sense…

The answer depends on your training goal: for fast recovery after intense sport or competitions, an ice bath after training is…

For muscle strength and explosive performance, 3 to 5 grams of creatine monohydrate per day has a clear effect; a loading…

More steps per day is strongly associated with a lower risk of dying, and the benefit starts at as few as 3,000 to 4,000…

A low SRT score is associated with a considerably higher risk of death, but that does not mean the score determines your fate.…

For tennis there are indications of a substantial gain in life expectancy, but for squash the evidence is entirely absent. If…

75 minutes of vigorous exercise per week already delivers close to the maximum benefit for your lifespan. On top of that, make…

Regular walking is associated with two to six extra years of life, with the greatest gain for people who currently barely…

Just fifteen minutes of moderate exercise a day is associated with an average of 3 years of longer life expectancy. Doing more…

In people between the ages of 65 and 80, your balance on one leg does say something about your health risk, but it is a…

Even a quarter of an hour of exercise a day makes a measurable difference; the biggest gain comes from going from nothing to…

Cardio beats strength training when looking purely at belly fat, but the combination of both performs best. Opt for…

Green tea adds a small but measurable extra effect on top of exercise in terms of weight loss and inflammatory markers. For…

Paracetamol probably does not relieve exercise-induced muscle soreness any better than a placebo, and there are indications…

Avoid taking a cold bath immediately AFTER strength training if muscle growth is your goal: it measurably inhibits muscle…

Creatine is not a slimming aid and is not recommended for fat loss as a primary goal. If you combine it with strength…

There is no hard universal formula for the right amount of Zone 2 training, but lactate as a control tool (target zone 2-4.5…

Urolithin A appears safe and has shown a modest effect on muscular endurance in some studies, but the hard endpoints fell just…

Creatine gummies have never been directly compared with creatine powder, and solid creatine forms are demonstrably absorbed…

Magnesium has no demonstrable effect against the most common muscle cramps, neither in older adults nor in athletes. If the…

Peptides, especially in combination with resistance training, can make a measurable contribution to muscle mass and strength…

Sarcopenia is the age-related loss of both muscle mass and muscle function and can be substantially slowed with resistance…

An ice bath after strength training demonstrably inhibits muscle growth, so if you want to build muscle it is better avoided.…

There is no researched minimum for zone 2 in recreational athletes, but patterns in elite athletes show that low intensity…

Urolithin A shows positive effects on the health of your cells' energy factories and on muscle strength in small studies, but…

Creatine has reasonably well-supported benefits for people over sixty in the areas of muscle strength, muscle mass and memory,…

For most people who eat a normal diet, electrolyte supplements are not necessary. They are only useful during prolonged…

No, 10,000 steps is not a scientific standard but a marketing slogan. Depending on your age, you can gain substantial health…

Carbohydrates probably increase the uptake of creatine into the muscle cell via insulin, but when compared against a placebo…

Muscle strength is one of the best-supported pillars of healthy ageing: losing it increases the risk of falls, disability and…

Walking alone is not enough to maintain muscle as you age. Add strength training and ensure adequate protein intake for the…

Yes, regaining lost muscle mass in later life is possible, but the earlier you start, the better the outcome. Resistance…

After the age of fifty, you can quickly lose 3 to 4% of leg strength per year, far more than muscle mass alone would suggest.…

Grip strength is a remarkably strong predictor of longevity, stronger than blood pressure in some large studies. Whether…

Moving too little demonstrably disrupts how your cells handle sugar, signals and inflammatory processes. Even a small increase…

Structurally overtraining can accelerate ageing processes, while regular moderate to intense exercise actually protects you.…

Cold showers do not demonstrably make your cells healthier: they actually hold back growth and recovery processes in muscle…

Muscle tissue burns more calories at rest than fat tissue, and strength training produces a measurable increase in resting…

For fitness and day-to-day blood sugar control it makes little difference whether you exercise in spread-out bouts or in one…

The type of protein matters per meal for muscle building, but over the long term with resistance training, the difference…

Your body can use more than 20-25 grams of protein per meal, especially when that protein is combined with carbohydrates and…

Distribution throughout the day matters most: eat a portion of 20-40 g of protein every 3 to 4 hours, and the precise timing…

Exercise activates autophagy in muscle cells through well-described mechanisms, but most of the evidence comes from animal and…

Whether creatine genuinely helps preserve muscle during GLP-1 medication use is unknown, because it has never been directly…

Creatine (3 to 5 grams per day) can probably speed up muscle recovery after intense training and improve strength and muscle…

Walking in green spaces or living near them shows clear signs of a positive effect, particularly on stress and physical…

Getting older does not call for more rest, but for more regular training: at least two resistance-training sessions per week,…

Strength training after 70 is both safe and worthwhile: the evidence for greater muscle strength and reduced fall risk is…

Stretching demonstrably improves flexibility, and 10 minutes per week is already enough for the maximum effect. For preventing…

Recreational running probably does not cause osteoarthritis and is actually associated with less osteoarthritis than a…

Walking is good, but strength training adds something walking cannot: preserving muscle mass, strengthening bones and keeping…

Urolithin A has the strongest evidence for improving muscular endurance in older adults and muscle strength in middle-aged…

Yes, your walking speed says something about how your body is ageing. People who walk slower than 0.8 to 1.0 metres per second…

Strength training, combined with adequate protein intake, is the best-supported strategy against muscle loss after age 60. If…

For fat reduction and improved blood fat levels, morning exercise has the strongest evidence. For heart and blood vessel…

Your aerobic endurance declines quickly: a measurable difference is already present after 10 days. If you maintain your…

Yoga and pilates both reduce pain in chronic lower back pain, comparably to or better than conventional rehabilitation. If you…

Creatine is not just for athletes. Combined with strength training, it helps older adults gain more muscle strength, and…

Strength training is one of the best-supported interventions for healthy ageing: training two to three times per week with…

Start with 2 to 3 training days per week, sets of 8 to 12 repetitions close to your maximum, and increase the weight as soon…

A calf circumference below 33 cm or a slow walking speed are good reasons to ask your GP about a grip strength test and muscle…

The biggest health leap comes from just a little exercise. Going from nothing to 150 minutes per week gives a 31% lower chance…

For most healthy adults who want to maintain their muscle mass, 1.2 to 1.6 grams of protein per kilogram of body weight per…

If you meet the exercise guideline, that largely neutralises the risk of prolonged sitting. If you do not meet it, every…

A higher VO2max is strongly associated with a longer life, though exercise itself is probably at least as important as the…

Supervised balance and resistance training or group tai chi lasting at least three months are the best choice if you want to…

Training too much without sufficient recovery can lead to overtraining syndrome, with demonstrable harm to your performance,…

For a healthy adult, 150 minutes of moderate cardio per week is the well-supported minimum, supplemented by two…

Low grip strength is associated in large-scale research with a noticeably higher risk of premature death, though muscle power…

More steps are better for your health, but even 2,500 steps per day already yields measurable benefit. Aim preferably for…

Zone 2 training is light endurance exercise just below your first threshold, popular among (elite) endurance athletes, but for…

Goji has shown interesting properties in experiments with cells and in animal studies. In people, its effect on ageing has…

The Japanese dietary pattern, rich in vegetables and fish and low in fat, is clearly associated with a longer and healthier…

Brown rice is more nutritious than white rice and produces a lower blood sugar spike, but only in its ordinary form, not the…

A Korean eating pattern built on wholegrains, legumes, vegetables, fruit and fish is linked in several studies to fewer…

Intermittent fasting is a viable approach for women over forty, including after menopause, for weight management and improved…

Alternate-day fasting has the strongest short-term evidence for weight loss, but the advantage over simply eating less is…

Eating an avocado every day probably has beneficial effects on your cholesterol, especially when you use it to replace other,…

The timing of your meals is associated with biological ageing and risk of death, but cause and effect have not been proven.…

Eating less animal protein appears beneficial in middle age, but after the age of 65 getting enough protein is actually…

16:8 works better than shorter fasting windows in the short term, but over the long term it is not demonstrably better than…

Intermittent fasting probably lowers total cholesterol and LDL modestly, but its effect on 'good' HDL cholesterol is unclear…

Avocado raises your lutein intake and appears to improve macular pigment density, but the direct evidence for this is limited…

Avocado measurably helps with the absorption of fat-soluble vitamins and carotenoids from other vegetables. A few slices on…

If you eat half or a whole avocado in place of carbohydrates, there is preliminary evidence that your post-meal blood sugar…

A Mediterranean diet demonstrably helps reduce belly fat, and a polyphenol-rich variant with green tea and walnuts appears to…

There is no official daily recommendation for lithium; scientists cite 1 mg per day as a cautious guideline, but evidence for…

More than 400 grams a day helps, but whether 800 grams is clearly healthier than 400 grams depends on your goal: for heart and…

Yoghurt has the strongest support: regular consumption is linked to a lower risk of diabetes and heart and vascular disease.…

A sunbed can raise your vitamin D level, but only if the light also contains UV-B, and most commercial beds emit very little…

The ideal protein level differs by stage of life: in middle age less appears to be better, while after the age of 65 getting…

Milk in coffee breaks your fast: it stimulates insulin release and counts as food intake. If you want to keep your fasting…

Eating spicy food regularly is linked to a lower chance of dying early, but whether it is the cause is not yet known. With…

Spermidine is a molecule that occurs naturally in your body, declines with age, and is obtained through fermented foods and…

Quercetin has interesting properties in the lab and in small human studies, but whether supplements actually make a difference…

There is no established daily figure for taurine alone. Anyone who regularly eats fish, meat or dairy is probably getting…

Research suggests that your body reaches balance at around 165 mg per day, but official recommendations are higher and there…

Many fish oil supplements are more rancid than international standards allow and contain fewer active fatty acids than…

A fasting-mimicking diet has promising effects on several health markers, but whether it works better than simply eating less…

A high intake of ultra-processed food is associated with a higher risk of dying, but estimates vary widely (2% to 21%) and…

Two to three cups of green tea per day is the amount at which research shows the most health benefits, though cause and effect…

For healthy adults without a deficiency, 1 to 2 mg of iron per day through food is sufficient. When a deficiency or anaemia is…

The fasting-mimicking diet improves measurable risk factors such as blood sugar, blood lipids and abdominal fat across…

Eating more fibre is well supported as healthy for most people, but overdoing it causes gastrointestinal complaints and no…

Raw milk offers no proven health advantages over pasteurised milk, while its infection risk is considerably higher. For…

Sulforaphane has impressive effects on ageing processes in lab and animal studies, but whether this also holds true in people…

As a food, sea moss has a reasonably good nutritional profile, but as a supplement there is no evidence that it provides a…

For most healthy adults, three to four cups of filter coffee per day, without sugar and cream, does more good than harm.…

Seed oils like sunflower oil are probably not outright harmful, but cannot be given an unconditional clean bill of health…

For healthy people without medication, strictly separating intake is probably unnecessary, as long-term research shows no…

Too much zinc is certainly harmful: as an adult, stay below 25 mg of elemental zinc per day (EFSA limit) and be cautious with…

Too much vitamin D is genuinely harmful, but that risk only arises at blood levels far above the recommended values. Stick to…

There is no fixed omega-3 dose for everyone: for heart protection, around 1 g of EPA+DHA per day is the most studied amount;…

For healthy adults under 75, extra vitamin D is probably not necessary. For children, adults aged 75 and over, pregnant women,…

In laboratory animals the effect on lifespan is well established, but in healthy humans direct evidence is lacking. A moderate…

Eating a lot of ultra-processed products is associated with a shorter lifespan and more chronic disease, but the effect varies…

Five servings of vegetables and fruit per day offers the best protection, with non-starchy vegetables counting and juice and…

Pterostilbene is absorbed better than resveratrol and more often outperforms it in laboratory and animal studies, but it has…

Haem iron from meat, fish and poultry is absorbed best. If you choose a supplement, divalent iron (ferrous sulfate) works…

The form matters, but the meal you take omega-3 with matters at least as much: always take ethyl esters with a fatty meal,…

Black coffee fits comfortably within intermittent fasting and is explicitly listed as a fasting drink in dietary guidelines.…

For healthy people without an established condition, there is no evidence that eating gluten-free provides any benefit, and it…

The Mediterranean diet and sufficient vegetables and fruit are consistently associated with a lower cancer risk, although the…

In the long term, the ratio of fat versus carbohydrates matters little for your weight, as long as your total calorie intake…

The time at which you eat does appear to matter, although the evidence in humans is still associative. A nightly fasting…

Eating vegetables and/or protein first and carbohydrates last demonstrably blunts the post-meal blood sugar spike, even in…

Extra protein helps preserve muscle mass while losing weight, but works best in combination with strength training. Aim for…

Older adults likely need more protein than the standard guideline of 0.8 grams per kilogram suggests. As a healthy older…

Exercise and NAD+ supplements (NR or NMN) demonstrably raise NAD+ levels, but whether higher levels also confer health…

Blue Zones show a striking pattern of lifestyle and advanced age. The exact age figures are disputed, but regular exercise,…

Three to four portions of fish per week is healthy for most people. Whether farmed fish and wild fish are nutritionally…

Whole fruit comes out ahead of fruit juice: more fibre, greater satiety, and fewer free sugars. Smoothies fall somewhere in…

Large-scale observational research consistently points in the same direction: wholegrain is better for your heart, your weight…

A good-quality plant-based diet is linked to fewer early deaths. But strictly vegetarian or vegan eating has not been proven…

Five portions of fruit and vegetables per day (two pieces of fruit, three serving-spoon scoops of vegetables) is the number…

Eating more fibre helps with constipation in older adults, but the overall dietary pattern matters at least as much as fibre…

In laboratory animals, eating less convincingly extends lifespan, but this has not yet been demonstrated for healthy people…

Extra vitamin C offers little benefit for most people. Intensive athletes and people following a carnivore diet do have a good…

Ginger probably helps with nausea, especially during chemotherapy and possibly also after surgery or during pregnancy. For…

Eating organic probably does not give you better nutritional value, but it does lower your exposure to pesticide residues and…

There is no magic number: for a healthy adult who is not very active, thirst is a reliable guide, with a total fluid intake of…

Smoking demonstrably costs years of life expectancy at the population level, but a precise personal figure cannot be given on…

There is no universal threshold, but for tooth decay, getting less than 10% of your daily calories from free sugars is the…

Aiming for 25 to 29 grams of fibre per day is well supported and delivers the greatest health benefit. Most people in Western…

Intermittent fasting helps with weight loss and improves blood glucose and insulin, but over the longer term it does no better…

For anyone looking to use diet to invest in a long and healthy life, the Mediterranean diet is currently the best-supported…

Which screenings apply at your age depends on the individual, but a few anchor points are well supported: annual mammography…

For healthy people, antioxidant supplements such as beta-carotene and vitamin E are not useful as protection against cancer or…

Soy is probably harmless and possibly beneficial for most healthy adults, but caution is advised for children with thyroid…

Yoghurt and dairy are a perfectly good choice for bone health for most people, and are likely neutral to mildly beneficial for…

A ketogenic diet can help with weight problems and metabolic disorders, but for people who simply want to live longer and stay…

Too little sunlight is demonstrably harmful, especially for your bones. For broader disease risks the associations are…

Getting older increases the risk of a B12 deficiency, even if you eat healthily. A tablet of 1000 µg per day is safe and…

For people with healthy kidneys there is little reason to worry about a generous protein intake, but those who have kidney…

Many large studies in people consistently point in the same direction: eating more legumes is linked to a lower risk of dying.…

Two portions of oily fish per week, as part of a varied and plant-rich diet, is a smart choice for most people when it comes…

People who habitually drink three to five cups of coffee a day are consistently less likely to develop type 2 diabetes in…

Studies where people were assigned to a sweetener or comparison drink show that diet soft drinks at moderate consumption are…

Eating a lot of ultra-processed food is consistently associated with higher risks of cardiovascular disease, diabetes,…

In large population studies, the Mediterranean diet is consistently linked to a lower chance of dying and less heart and blood…

Blood tests give a clear picture of thyroid problems, and levothyroxine works effectively when there are clear abnormalities.…

"Compound x" is not the name of a single known substance. Several substances show promising results for Parkinson's disease in…

GLP-1 agents are showing preliminary positive signals on motor decline in Parkinson's disease, but the studies are still too…

Exercise demonstrably helps with Parkinson's disease: motor symptoms decrease and quality of life improves. Dance and aquatic…

GLP-1 agonists measurably increase the risk of gallstones, but the risk of pancreatitis does not appear to be elevated in the…

Protective clothing, DEET on the skin and a thorough tick check after going outdoors together form a sensible strategy. If you…

Milk has a brief suppressive effect on stomach acid. For persistent symptoms, common antacid medicines work considerably better.

Yes, multiple supplements are demonstrably risky in the presence of kidney damage. Herbal preparations (particularly those…

Stem cell therapy has not yet been proven effective in ALS patients; the procedure appears to be safely feasible, but whether…

Screens are probably not the main culprit; too little time outdoors and academic pressure are better-supported causes. Make…

Gum recession is widespread and often present without being noticed; the main habit that worsens it is abrasive horizontal…

If your kidneys are healthy, you do not need to restrict your protein intake. If you have chronic kidney disease, discuss with…

An elevated CK level is a signal of possible tissue damage, but the causes are wide-ranging and always require further…

There is no evidence that ibogaine helps with Parkinson's disease, and the known safety risks, particularly for the heart,…

Microplastics are demonstrably present in your body and have been linked in laboratory and animal research to inflammation and…

Daily brushing supplemented with interdental brushes is the best foundation for a healthy mouth; if you have diabetes, regular…

Oil pulling has preliminary indications of a modest effect on gums and plaque, but the evidence is still too weak to recommend…

There is no clinical evidence that mewing improves the jawline in adults. Serious tongue-exercise therapy does exist, but is…

For healthy people the risk of liver injury appears small, but it is not negligible. If you have a liver condition, do not use…

There is no single universal lower limit for vitamin B12: it differs by measuring device, ethnicity, and life stage. Always…

Total B12 alone misses too many cases. Ideally combine it with MMA (methylmalonic acid, a substance that rises when your cells…

The kidneys age measurably faster than the liver, but for most healthy people that decline only has major consequences when…

The lens of the eye ages noticeably early and quickly, but whether your eyes as a whole age faster than the rest of your body…

An underactive thyroid produces vague complaints such as fatigue, weight gain and cold intolerance, but the diagnosis can only…

Thyroid blood tests can rule out or confirm whether your thyroid is the cause, but a mildly abnormal TSH alone does not…

Irritable bowel syndrome is not all in your head: researchers measure real physical abnormalities in the gut. Psychological…

Antibiotics are becoming less effective because bacteria naturally possess protective mechanisms and eighty years of intensive…

Supervised exercise therapy and diclofenac gel have the strongest evidence base in osteoarthritis. Paracetamol and opioids…

For joint pain due to knee osteoarthritis and for active athletes, collagen is worth trying: 10 grams of collagen peptides per…

Strength and stabilisation exercises have the strongest evidence base for chronic lower back pain. If those do not help…

Hearing loss caused by noise and by certain medications is very preventable, but for age-related hearing loss no proven…

The two best-supported steps to limit kidney damage as you age are keeping your blood pressure under control and exercising…

Protect your eyes with UV-filtering glasses, a diet rich in vegetables and fruit, good diabetes management and regular eye…

Exercise and maintaining a healthy weight are the best-supported ways to prevent osteoarthritis and manage symptoms; however,…

More social contact is linked to a longer life, but the effect is far more specific than you might think: the type of contact…

A pet can contribute to more physical activity, less loneliness, and a better sense of wellbeing, but whether it also extends…

A strong sense of purpose in life is associated with a lower risk of premature death, but whether the relationship is also…

Air pollution is seriously harmful: it increases your risk of lung and heart disease and costs millions of lives worldwide…

Take magnesium about an hour before bedtime, but do not expect a guaranteed effect: the evidence is thin and a substantial…

For most active people the advice is: allow a buffer of at least four hours between intense exercise and bedtime. If you are…

Cognitive behavioural therapy for insomnia works best and lasts longest; sleeping pills are a short-term solution and are even…

Magnesium may offer some benefit for sleep in certain people who are deficient or have a medical condition, but this has not…

A good wearable shows patterns over time. It overestimates your sleep duration as a rule, and it does not measure your sleep…

If you want to try melatonin for difficulty falling asleep, 4 mg taken 3 hours before bedtime gives the best chance of effect;…

Magnesium may make some difference for older adults with sleep problems or for people with a deficiency, but its effect has…

For healthy sleepers, mouth taping has not been proven beneficial, and it is risky if you have a blocked nose. If you have…

A daytime nap improves alertness, memory and concentration, especially if you take it before 13:00 and keep it between 20 and…

There is currently no evidence that apigenin as a supplement meaningfully improves sleep in humans. Animal research is…

Glycine shows tentatively positive signals, but the evidence is thin and the only direct human study comes from the…

Consistently sleeping too little is associated with a measurably higher risk of earlier death and serious illness; the…

Evening intake sounds logical given magnesium's role in melatonin and sleep, but no research directly compares evening versus…

Yes, loneliness is clearly associated with poorer sleep: you have more difficulty falling asleep, wake up more often during…

A consistent morning routine with daylight helps sharpen your biological clock, allowing you to fall asleep earlier and more…

Your biological clock and your chronotype determine when your body wants to be awake. When that clock does not align with your…

If you have sleep apnoea, your sleeping position makes a clear difference: side sleeping produces a noticeably better night…

CBT-I demonstrably produces lasting sleep improvement, even after the sessions end, something that does not apply to sleep…

Pain and poor sleep reinforce each other, with lack of sleep generally making pain worse more than the other way around. The…

A blue-light filter on your phone probably has little effect on your sleep; if you still want to try something, filter glasses…

Sleep debt is a real phenomenon that builds up without you noticing it clearly. A weekend of sleeping in reduces the deficit,…

For older people with sleep complaints, particularly waking up too early, melatonin offers a modest but real benefit. The…

There is currently too little good research to say that CBD oil genuinely helps with sleep problems; if you are affected,…

Alcohol, caffeine and fatty meals close to bedtime disrupt your sleep. You sleep better by avoiding all three in the evening…

Older people demonstrably get less deep sleep, and this is associated with higher risks of dementia and lower growth hormone…

A daily walk of around half an hour outside helps improve your sleep, as shown by a randomised study. The surroundings matter…

Stress worsens your sleep, and poor sleep raises your stress levels: that cycle is well documented. Anyone who notices that…

Eating late is associated with taking longer to fall asleep and poorer sleep quality, although cause and effect have not…

Sleeping worse with age is well documented and has multiple causes, including brain changes and, in women, the menopause.…

A clinical sleep study is certainly worthwhile when a home test is not feasible or not sufficient, or when your health…

Sleep deprivation demonstrably disrupts the processes that keep the brain young, particularly the clearance of harmful…

Valerian has not been shown to help people fall asleep faster, but if you want to try it and do not have insomnia as a medical…

Waking up tired despite sleeping for a long time is a normal phenomenon called sleep inertia, and the time of waking and…

Sufficient sleep demonstrably benefits your memory: your brain processes and stores new information while you sleep. Too…

You need both sleep stages: deep sleep and REM sleep each do something different for your memory and brain, and getting a full…

Consistently sleeping too little or too poorly demonstrably raises the risk of diabetes. Seven to eight hours of sleep per…

A weighted blanket may be beneficial for sleep in some people, particularly those with anxiety, autism, or sensory…

The time before or after midnight is not the real criterion: what matters is how well your sleep timing aligns with your own…

Your smartwatch gives a useful indication of your sleep pattern, but accuracy varies considerably by device and it is not a…

Simply dreaming a lot is normal and need not be a cause for concern. However, persistent nightmares or dreams that you…

A bed that is too warm disrupts your sleep; a slight drop in body temperature is actually necessary for falling asleep well.…

Magnesium may be worth trying for sleep problems, but the evidence is limited and the studies are partly contradictory. At…

Evening exercise does not harm your sleep in most cases, but intense training within one hour of bedtime can cause problems.…

Creatine may improve how you experience your sleep, but objective measurements show no effect. The research is based on dozens…

Chronic sleep deprivation disrupts your hormones and metabolism after just a few nights. Structurally sleeping too little…

Whether an afternoon cup disrupts your sleep depends strongly on how much you drink. One cup, approximately 100 mg of…

Sleeping in on the weekend helps briefly but does not resolve chronic sleep debt. If you want to limit the downsides, keep…

A consistent sleep schedule really does matter. Irregular sleep times are strongly associated with more depression, anxiety, a…

Sleep changes in predictable ways as you age, and much of that is normal. Take notice if your sleep deteriorates…

Regularly waking during the night affects your mood, concentration and, over time, your health. If it is a structural problem,…

The menopause genuinely disrupts your sleep, mainly through hot flushes and hormonal changes. A talking therapy designed…

For everyday mental stress and mild sleep problems, multiple studies support 200 mg of L-theanine per day. For an anxiety…

A bedroom temperature of 20 to 25 degrees combined with good ventilation demonstrably improves your sleep. This effect is…

Long-term use of classic sleeping pills increases the risk of dependence, cognitive decline, and impaired driving ability.…

Alcohol helps you fall asleep faster, but measurably disrupts the rest of your night, even with just two drinks. If you want…

Seven to eight hours per night is the best-supported target range for adults. If you are consistently sleeping fewer than 7…

Poor sleep probably increases your risk of dementia, but ordinary insomnia does not make dementia inevitable. One exception:…

CBT-I is the most powerful approach for persistent sleep problems; if you do not have access to it, ask your general…

Screen light in the evening disrupts your sleep hormone and keeps you less sleepy at the wrong moment. Dim your screens after…

A power nap of less than 30 minutes taken early in the afternoon provides a modest but measurable boost to alertness and…

Shift work is demonstrably harmful to sleep, alertness and metabolism. The best approach combines a well-designed schedule…

Untreated sleep apnoea demonstrably increases the risk of stroke, heart problems, and accidents. If you have symptoms that may…

For healthy adults, melatonin is relatively safe with short-term use, but as a sleep aid for chronic insomnia it works…

Magnesium has no demonstrable benefit for ordinary muscle cramps, and for sleep problems the evidence is too weak to support a…

Strength training likely makes bones stronger after the menopause, but the effect on bone density is limited in size and the…

For bone health, 50 nmol/l is the most widely accepted target level, achievable with 800 IU of vitamin D per day. Whether a…

For bone strengthening, the combination of calcium and vitamin D is the best supported by evidence, especially in cases of…

Menopause causes bone loss because oestrogen disappears and disrupts the balance between bone breakdown and bone formation.…

A DEXA scan offers far more than a single density figure: it also images vertebral fractures, bone structure, muscle mass, and…

Strength training demonstrably improves bone density and offers additional benefits that medication does not, but the two are…

Strength training while losing weight is the best protection against bone loss, but cannot prevent it entirely. Combine it…

MK-7 is actually absorbed into the blood at normal supplementation doses, whereas MK-4 does not rise measurably at that dose.…

For osteoporosis, there is reasonable evidence that vitamin K2 and D3 together do more for bone density than either one alone;…

Whether you need calcium supplements depends strongly on your age and situation: for healthy women before the menopause there…

With age, bones become both thinner and more fragile through a combination of hormonal changes, deteriorating bone structure…

Strength training helps to increase or maintain bone density, but the effect is modest and a reduction in fractures has not…

After fifty, genuine bone building is probably no longer achievable, but you can substantially limit the loss. Combining…

A hip fracture strongly raises the risk of dying for many years afterwards, especially in older men and people with other…

Supervised exercise genuinely helps if you have osteoporosis: it slows bone loss, improves your balance and muscle strength,…

Poor balance increases the risk of falling and therefore of bone fractures; targeted balance training can reduce that risk by…

Fermented dairy, sufficient vegetables and fruit, and a varied diet with protein and calcium are best supported for bone…

People with darker skin have a greater chance of vitamin D deficiency, but that does not automatically mean greater bone loss.…

Getting enough zinc through your diet is probably important for your bone health, but whether a zinc supplement genuinely…

A vegetarian diet does not automatically weaken your bones, but as a vegan you need to pay extra attention to calcium and…

Vibration plate training helps against bone loss, particularly in the lower back and partly in the hip, but regular strength…

Research shows that bone mass loss becomes measurable within a few months at weight-bearing sites such as the hip and spine…

Steroids in sport appear to stimulate bone formation in the short term, but they disrupt your hormonal balance in a way that…

Both type 1 and type 2 diabetes clearly and demonstrably increase the risk of bone fractures. If you have diabetes, discuss…

Both an overactive and an underactive thyroid increase the risk of osteoporosis. If you have a thyroid condition, it is wise…

A disrupted gut microbiome is associated with lower bone density, and the biological mechanisms are fairly well described.…

Anorexia can cause lasting bone damage, especially when the illness begins during puberty. Early recovery is crucial; speak…

Soy isoflavones probably do not protect the bones of postmenopausal Western women in any clinically meaningful way. It is…

For most people, coffee does not appear to be a proven cause of bone fractures. For women who drink a lot of coffee, some…

Omega-3 does not improve bone density in healthy older adults; for bone maintenance you are better off ensuring adequate…

Boron appears useful if you are not getting enough of it, but there is no good evidence that extra supplementation makes your…

Sunlight helps your bones through vitamin D, but a separate bone benefit outside that pathway has not been demonstrated and…

Sleep deprivation and poor sleep quality are associated with reduced bone formation and, in postmenopausal women, considerably…

Too little fat can damage your bones, but muscle mass and the location of fat matter at least as much. If you have concerns…

Being overweight does not straightforwardly increase bone density, and the location and amount of fat strongly determine…

Regularly drinking large amounts of sugary carbonated drinks is associated with lower bone density, especially in women and…

Animal and laboratory research shows positive signals, but there are no studies in humans. If you want to protect your bones,…

Getting enough magnesium appears to be good for your bones, but whether supplements truly prevent fractures has not yet been…

Eating strictly vegan is associated with lower bone density, but if you adequately supplement calcium and vitamin D, the…

Long-term cortisone use demonstrably weakens your bones; if you use it long-term, it is wise to discuss with your doctor…

Statins show positive effects on bone in laboratory and animal research, but randomised trials in humans do not confirm this.…

Prolonged bed rest demonstrably leads to substantial bone loss, particularly in the hip, spine and heel bone. Recovery takes…

Older bones are both thinner and more brittle, and reduced muscle strength makes falling more likely. This is a…

Walking helps a little with mild bone loss, but is probably not enough if you genuinely want to build or preserve bone density…

Running clearly stimulates bone formation better than activities without impact loading, but a direct comparison with swimming…

Chronic heavy drinking demonstrably weakens your bones and substantially raises the risk of a hip fracture; for your bones…

Smoking substantially increases the risk of bone loss and hip fractures; quitting helps, but it takes at least ten years…

As an adult you can still build bone mass, although the gains are more modest than in earlier life. Strength training, at…

Bisphosphonates reduce fractures and increase bone density in osteoporosis, and at high fracture risk can be used safely for…

Men do indeed get osteoporosis, and the consequences of a fracture are on average more serious for them than for women. Only 1…

Calcium requirements range from 800 mg (young children) to 1500 mg per day (older adults, teenagers, postmenopausal women). Up…

For people with knee osteoarthritis or joint pain during exercise, there is reasonable supporting evidence that collagen…

Yes, too little protein increases your risk of bone fractures in later life. This works both through weaker bones and through…

You can get a good sense of your risk based on age, sex, hormonal history, medication use and lifestyle. If you have multiple…

High-intensity resistance training (at least 70-85% of maximum load, two to three times per week, for at least eight to twelve…

Calcium and vitamin D together can improve bone density and slightly reduce the risk of hip fractures when a deficiency has…

With a bone density scan and, where appropriate, a fracture risk calculation, your GP can check whether your bones are strong…

You can protect your bones well after the menopause with hormone therapy, adequate calcium and vitamin D through diet, and…

Glucosamine sulphate (1500 mg per day) may produce a modest reduction in pain from knee osteoarthritis after twelve months,…

For bones in women after the menopause the evidence is reasonably strong; combining K2 with vitamin D gives the greatest…

Strength training measurably improves bone density, although the effect remains modest. For the strongest results,…

Vitamin D alone does not demonstrably reduce the chance of bone fractures. Combined with calcium it does help, especially in…

Taking psyllium before a meal demonstrably lowers the blood sugar peak in people with type 2 diabetes, and with longer use…

Alternate-day fasting and the 5:2 pattern show the strongest evidence for loss of belly fat, but the studies are short-term or…

Eating less has, on average, a slightly larger effect on belly fat than moving more, but the combination works best. Choose…

Eating low-carb probably helps with belly fat, but the effect depends strongly on how strictly you follow it and whether you…

Semaglutide demonstrably helps with weight loss: an average of 15% of starting body weight after just over a year. It works by…

The combination of eating fewer calories and exercising for more than 250 minutes per week is the most proven effective…

Muscle mass, abdominal fat, age, sex and the way you lose weight together determine how fast your metabolism runs. Building…

You can influence your metabolism, but the effects are more modest than popular claims suggest. Most of the gain lies in more…

Drinking water probably helps with weight loss, especially when done before meals or used to replace sugary drinks. The effect…

16:8 fasting demonstrably produces more weight and fat loss in healthy adults than 12:12, which showed no measurable effect…

Intermittent fasting can be safe in type 2 diabetes, but only if you do this in consultation with your doctor, because your…

Taurine has demonstrable functions in the retina, the heart and the brain, and its importance for infants is well-established…

Berberine leads to modest weight loss in some studies, but a large, well-designed study found no effect on visceral abdominal…

Early liver fat accumulation and even fibrosis are largely reversible through weight loss of 10% or more. Start with a…

A stable, low blood sugar is associated worldwide with more healthy life years. The association is clear, but the exact gain…

Fatty liver and type 2 diabetes reinforce each other: they share the same underlying mechanism and roughly double each other's…

Yes, the order in which you eat affects your blood sugar and digestion speed: eating protein or vegetables first and…

Yes, diabetes measurably accelerates biological ageing: the risk of cardiovascular disease, dementia and early death…

When you eat matters: meals earlier in the day appear more favourable for your metabolism than eating late, although the…

Water-soluble fibre from legumes, vegetables and fruit probably helps lower high blood sugar, but the overall composition of…

The effect of alcohol on your blood sugar depends strongly on context: on an empty stomach the risk of low blood sugar is…

Cinnamon can modestly lower fasting blood sugar in type 2 diabetes, but whether that makes any meaningful difference to…

Strength training appears to work better than cardio alone in people with diabetes and a normal weight, but in overweight…

Research shows that chronic stress increases the likelihood of weight gain over the long term, particularly belly fat, through…

Sitting for long uninterrupted periods noticeably impairs your blood sugar and metabolism, but short breaks of 2-3 minutes of…

Fasting blood sugar and post-meal spikes are two separate quantities that you need both of for a complete picture; in diabetes…

Cold water clearly speeds up metabolism for as long as you are in it, but whether this produces any meaningful effect on…

Intermittent fasting improves insulin sensitivity in most people, but watch out for possible muscle loss and hormonal effects,…

Visceral fat is more dangerous than subcutaneous fat because it sends irritating substances and fatty acids directly to the…

There is reasonable evidence that magnesium has a beneficial effect on insulin resistance, particularly if your magnesium…

After forty, your body burns fewer calories, mainly due to muscle loss and a lower resting metabolism. You therefore do not…

Brown fat is genuinely different from regular fat and you can activate it, with cold exposure having the strongest evidence.…

Metformin lowers blood sugar primarily by causing the liver to produce less new glucose, without the risk of dangerously low…

Metformin helps with weight loss, but the effect is modest: expect a few kilograms, not a dramatic transformation. Lifestyle…

Strength training probably helps against insulin resistance, although the effect is most strongly demonstrated in combination…

There is no single best method for everyone. For daily use, a fasting blood draw with HOMA or QUICKI (calculation methods for…

Insulin resistance is associated with measurably faster biological ageing, greater muscle loss, and possibly a higher risk of…

Diet can clearly improve your insulin sensitivity. The Mediterranean diet has the strongest evidence base, but the timing and…

Early signs of insulin resistance are measurable long before a diabetes diagnosis: elevated fasting insulin, abdominal fat,…

An HbA1c below 5.0% is associated with an increased risk of death in people without diabetes, although this is likely a signal…

In stable diabetes, measuring twice a year is standard; when values fluctuate or treatment has changed, four times a year is…

An elevated HbA1c, even well below the official diabetes threshold, is associated with a greater risk of diabetes, kidney…

Several medications demonstrably lower HbA1c: the weekly semaglutide injection has the strongest evidence base, but oral…

In healthy adults, a normal HbA1c falls between roughly 4.79% and 6.15%, with an average of 5.47%. If your value is above…

Proteins inhibit autophagy because amino acids from your meal keep mTOR active, the best-known brake on autophagy. If you want…

Vitamin B3 is the only dietary building block for NAD+ in your body; that relationship is causal and well supported. Whether…

Research into NAD+ supplements such as NMN and NR shows that they do not cause weight gain. In people with overweight or…

Coffee does not activate mTOR. Caffeine actually inhibits mTOR, and in humans this mechanism has not yet been directly tested.…

Both fasting and intense exercise reliably activate AMPK, with high exercise intensity producing the strongest effect. If you…

mTOR is a switch in your cells that determines when they grow and when they clean themselves up. In ageing, that switch is set…

Chronically too much insulin is probably bad for healthy ageing, but science does not yet know precisely what the ideal…

Yo-yo dieting is probably less harmful than is often thought, but whether it is the cause of health damage, or whether…

Sugary drinks clearly and demonstrably raise your risk of type 2 diabetes. Sugar from solid food barely does. The biggest…

Limiting blood sugar spikes makes sense even without diabetes: the risk of cardiovascular disease appears to rise with spikes…

Ageing lowers your energy expenditure through muscle loss and a slower metabolism, making weight loss objectively harder.…

Your metabolism does not slow down from your thirties onward, but after your sixties energy expenditure does decline…

For most people a fatty liver is stable for the time being, but it substantially raises the risk of cardiovascular disease,…

Eating earlier in the day is more favourable for your weight, blood sugar and hormone balance than eating late or at night.…

Tirzepatide consistently produces greater weight loss than semaglutide, but both medications have comparable gastrointestinal…

Exercise is the only demonstrably effective way to improve mitochondria; for supplements such as NMN or urolithin A, the…

Approach this with caution. Berberine measurably lowers blood sugar, but EFSA was unable to establish a safe intake level due…