NPR

Study: CTE Found In Nearly All Donated NFL Player Brains

As the country starts to get back into its most popular professional team sport, this serves as a reminder of how dangerous football can be.

As the country starts to get back into its most popular professional team sport, there is a reminder of how dangerous football can be.

An updated study published Tuesday by the Journal of the American Medical Association on football players and the degenerative brain disease chronic traumatic encephalopathy reveals a striking result among NFL players.

The study examined the brains of deceased former football players (CTE can only be diagnosed after death) and found that 110 out of 111 brains of those who played in the NFL had CTE.

CTE has been linked to repeated blows to the head — the 2015 movie Concussion chronicled the discovery of CTE's connection to football.

In the study, researchers examined the brains of 202 deceased former football players at all levels. Nearly 88 percent of all the brains, 177, had CTE. Three of 14 who had played only

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