A new study on donated brain tissue from former football players found troubling signs of CTE, a degenerative brain disease.

A startling study suggests at least one in four NFL players develops CTE, but doctors still can’t identify it in living ...

A new study finds that 1 in 4 NFL players who died between 2016 and 2021 had CTE, the degenerative brain disease. Researchers have long known about the link between repeated head hits and CTE.

LONDON — A protein marker of Alzheimer’s disease in the brain may also help diagnose cases of the brain condition chronic traumatic encephalopathy, or CTE, early data suggest. The condition, which is ...