Jesper Bengtson

Microplastics are turning up in human brain tissue, and no one yet knows what they do

Arizona State researchers will scan 100 postmortem brains after a pilot detected plastic signals in human tissue.

Nearly half of dementia cases could be prevented, and most risk factors are in your control

A landmark Lancet Commission puts the share of dementia that could be prevented or delayed at around 45%.

One bedtime drink added 84 minutes of sleep a night in early research

A new review pulls together the evidence, and the caveats are big.

Adding just half a tablespoon of olive oil a day may protect your heart and brain

A daily half tablespoon is the threshold linked in large studies to lower disease risk.

Your brain may be warning you about heart disease 3 to 8 years before it strikes

Subtle changes in thinking may precede a heart attack or stroke by years, a large new study suggests.

Two hours in nature each week may be enough to significantly improve your health

A study of nearly 20,000 adults pinned down a specific weekly dose.