Fish oil pills and brain health: what a new trial adds to the evidence

A new randomized trial found high-dose DHA changed a brain-fluid marker but did not improve cognition or brain structure over two years, adding to doubts about fish oil supplements for dementia prevention.
Simple brain-protection habits that can matter for years

AARP highlights practical steps linked to long-term brain health, while CDC and heart experts say hearing, sleep and vascular risk factors all matter for cognitive aging.