Researchers pinned down how much whole grains actually move the needle. The answer sits above what most guidelines recommend.

MRI scans of 615 adults linked higher ultra-processed intake to fat streaking through thigh muscle — independent of how many calories they ate. 

A molecule in the eye drops sharply before decline is visible. Restoring it helped — but not by acting on the cells you'd expect.

Restoring one hypothalamic protein improved skin, bone, and cognition in 30 days — suggesting aging is coordinated more than we assumed.