List of NFL players with chronic traumatic encephalopathy

A large number of former National Football League (NFL) players have been diagnosed with or have had chronic traumatic encephalopathy, or CTE. A definitive diagnosis so far can be made only post-mortem. However, an increasing number of former players are reporting symptoms of CTE. According to 2017 study on brains of deceased gridiron football players, 99% of tested brains of NFL players, 88% of Canadian Football League (CFL) players, 64% of semi-professional players, 91% of college football players, and 21% of high school football players had various stages of CTE.

List of NFL players with chronic traumatic encephalopathy

A large number of former National Football League (NFL) players have been diagnosed with or have had chronic traumatic encephalopathy, or CTE. A definitive diagnosis so far can be made only post-mortem. However, an increasing number of former players are reporting symptoms of CTE. According to 2017 study on brains of deceased gridiron football players, 99% of tested brains of NFL players, 88% of Canadian Football League (CFL) players, 64% of semi-professional players, 91% of college football players, and 21% of high school football players had various stages of CTE.