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Answers to the questions you ask yourself about healthy aging.

906 answers • 5,783 studies

What readers look for answers to

How much berberine do you need per day?How can you detect melanoma early?What does a daytime nap do to your health?Can you still build bone mass after fifty?What are the hallmarks of aging, exactly?Does menopause accelerate skin ageing?

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Brain & memoryMemory, dementia and what keeps your brain healthy as you age.

Do ketone drinks do anything for your brain or performance?
Does hearing loss increase your risk of dementia, and does a hearing aid help?
What does air pollution do to your brain in the long term?
How much ashwagandha do you need per day?

99 answers · 637 studies

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Nutrition & preventionWhat food, fasting, fibre and supplements really do for healthy aging.

Does linoleic acid in tissue increase the risk of skin cancer?
Does omega-3 protect your skin from sunburn?
Can you permanently change your gut microbiome through diet?
Does a fasting-mimicking diet work better than simply eating less?

227 answers · 1,440 studies

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Muscles & movementStrength training, protein and movement to stay strong and mobile.

How do you prevent bone loss when losing weight at an older age?
Does a cold bath or ice bath benefit your health in the long term?
How much zone 2 training do you need per week?
What does urolithin A do to your muscles and mitochondria?

101 answers · 629 studies

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InterventionsRapamycin, metformin, GLP-1 and other widely-discussed compounds.

What are the effects of microdosing with Ozempic?
Does strength training work as well as medication for osteoporosis?
Do ketone drinks do anything for your brain or performance?

266 answers · 1,678 studies

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MetabolismBlood sugar, insulin and weight , the engine of aging.

What are the effects of microdosing with Ozempic?
What do mitochondrial mutations mean for how quickly you age?
Does a fasting-mimicking diet work better than simply eating less?

119 answers · 781 studies

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Heart & vesselsCholesterol, blood pressure and vascular age , the biggest cause of death.

How much does ultra-processed food increase your risk of dying?
Is your oral health linked to cardiovascular disease?
How many sauna sessions per week produce health benefits?

101 answers · 642 studies

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SleepHow much sleep you need and what poor sleep does.

Are sleep trackers accurate enough to help you improve your sleep?
How much melatonin should you take to sleep better?
Does the sleepy girl mocktail (magnesium with cherry juice) help you sleep?

81 answers · 503 studies

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HormonesTestosterone, menopause and hormone therapy as you age.

Why do bones become more brittle after menopause, and what can help?
What can help women increase their libido?
Do your hormones influence how quickly you age?

80 answers · 537 studies

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Immune systemInflammation, defence and how your immune system ages.

What is the role of chronic inflammation in the development of cancer?
How harmful are microplastics in your body to your health?
Is raw milk healthier than pasteurised milk?

73 answers · 489 studies

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SkinSkin aging and what actually helps against it.

Does omega-3 protect your skin from sunburn?
Does slugging (smearing your skin with petroleum jelly) actually work?
Does skin cycling really work better for your skin?

72 answers · 443 studies

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CancerScreening, lifestyle and what shapes your cancer risk.

Does linoleic acid in tissue increase the risk of skin cancer?
What is the role of chronic inflammation in the development of cancer?
Which cancer screenings are worthwhile, and from what age?

68 answers · 444 studies

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Gut & microbiomeGut flora, fibre and fermented foods.

Can you permanently change your gut microbiome through diet?
How much probiotic do you need per day?
Can probiotics improve your health in later life?

66 answers · 425 studies

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Aging clocksBiological age, epigenetic clocks and biomarkers of aging.

Does your telomere length tell you anything useful about your health?
Do epigenetic clocks differ so much that your result is essentially random?
Can epigenetic reprogramming reverse ageing?

65 answers · 395 studies

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Cells & DNATelomeres, mitochondria, senescence and NAD , aging at the cellular level.

What do mitochondrial mutations mean for how quickly you age?
Can you repair DNA damage, or can you only prevent it?
What exactly does senescence do to your cells as you age?

65 answers · 443 studies

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BonesBone density, osteoporosis and strong bones in later life.

Why do bones become more brittle after menopause, and what can help?
What does a DEXA scan tell you that a regular bone density measurement does not?
Does strength training work as well as medication for osteoporosis?

64 answers · 423 studies

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