longevitywatch

Brain & memory

Memory, dementia and what keeps your brain healthy as you age.

110 answers, from 735 studies
Last updated: September 2026
Key questions
What have two landmark studies discovered about the role of your brain immune cells in ageing?
Microglia play an active role in brain ageing through fat accumulation and energy shortage, but most of the evidence still…
Moderate evidence
What does taurine do in your body?
Taurine has several demonstrable functions in your body: it supports the retina, heart, and brain, and helps cells maintain…
Yes · Moderate evidence
What role do hormones play in mental health complaints, and does current psychiatry fall short by only targeting symptoms?
Hormones, and cortisol in particular, play a demonstrable role in mental health complaints in a proportion of patients, but…
Moderate evidence
What does psilocybin do to your brain health?
Early clinical studies give cause for cautious optimism about psilocybin in depression, but use outside a supervised clinical…
Moderate evidence
What are the differences between ibogaine and psilocybin as treatments?
Psilocybin has more clinical evidence and a more favorable safety profile than ibogaine; ibogaine carries a real risk of…
Preliminary evidence
What does ibogaine do and what is it used for?
Ibogaine shows preliminary positive signals in opioid addiction, but the safety risks (including fatal cardiac arrhythmias)…
Preliminary evidence
Can ibogaine help with Parkinson's disease?
There is no research available that supports ibogaine as a treatment for Parkinson's disease; on the contrary, the available…
No · Insufficient evidence
What are white spots on the brain and do they increase the risk of dementia?
Pronounced white spots on a brain scan demonstrably increase the risk of dementia, but not every spot is equally concerning.…
Yes · Strong evidence
Latest articles
11 Sep
Statins may cut dementia risk in type 2 diabetes
Starting cholesterol-lowering medication shortly after a type 2 diabetes diagnosis appears to reduce the risk of developing…
1 min
10 Sep
REM sleep anchors memories through its own brain waves
Sleep is not one unified state. While deep sleep gets most of the attention in memory research, REM sleep turns out to have…
1 min
10 Sep
Brain stimulation targets women’s health in later life
Electrical brain stimulation is already used to treat depression and epilepsy.
1 min
10 Sep
Bladder signals respond to nerve stimulation by frequency
Nerve stimulation at the ankle has been used for years to treat bladder problems such as overactive bladder. But how it…
1 min
10 Sep
Motor nerve fibres are weakened by gaps in a support network
Longer nerves break down more easily. That has long been suspected, but the reason remains partly unclear.
1 min
09 Sep
The aging cerebellum keeps working past 80
The brain shrinks and loses structure over time. Yet one region does something unexpected: it keeps functioning almost as well…
1 min
09 Sep
APOE gene destabilises DNA packaging and drives cell aging
A gene long linked to Alzheimer’s disease does something else too: it destabilises how DNA is packaged inside cells,…
1 min
09 Sep
Engineered blood vesicles improve memory in Alzheimer mice
What if tiny packages from young blood could be modified to reach the brain more effectively?
1 min
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