One NFL player after another — from former Raiders quarterback Ken Stabler, 69, who died in July 2015, to 27-year-old Giants safety Tyler Sash, who died two months after Stabler — has been diagnosed with chronic traumatic encephalopathy (CTE), a degenerative brain disease caused by repeated trauma. The New York Times reports that well over 100 football players, including several Pro Football Hall of Famers, have CTE so far.
