111 N.F.L. Brains. All But One Had C.T.E.

A neuropathologist has examined the brains of 111 N.F.L. players — and 110 were found to have C.T.E., the degenerative disease linked to repeated blows to the head.
Read more: https://www.nytimes.com/interactive/2017/07/25/sports/football/nfl-cte.html?source=Snapzu