Sleep Apnea, Insomnia, and Dementia Risk: What We Know
Do insomnia and sleep apnea raise dementia risk? A 2025 meta-analysis links both to later cognitive decline, but treatment has not proved dementia prevention.
Fast Walkers After 80: A Marker of Brain Resilience
Fast gait after 80 tracks with better cognition and brain health. See what the study found, what brain scans add, and why speed cannot prevent dementia.
APOE4, Vitamin D, Grip Strength, and Dementia Risk
Can vitamin D status and handgrip strength signal lower dementia risk in APOE4 carriers? A 12-year UK Biobank study offers clues, not prevention proof.
Sit Smarter, Eat Mediterranean: What Brain Aging Studies Show
Reading and complex work while seated may track with lower dementia risk. Mediterranean eating also supports cognitive aging—but neither is proven causal.
Longan Flower & Pterostilbene: Two Mouse Studies, No Human Proof
Two mouse studies. Zero human trials. Longan flower extract for sleep and pterostilbene for dementia don't hold up under scrutiny — here's the full breakdown.