A study found 96.2 perfect of former NFL players suffered from some form of chronic trauma encephalopathy (CTE).
79 former NFL players brains were part of the study, 76 of them showed signs of CTE.
Per PBS's Frontline, a total of 128 former football players were studied they varied from professionals, semi-professionals, college players and high school players. From that sample, 101 players tested positive for CTE. That's a rate of 78.9 percent of football players.
"Obviously this high percentage of living individuals is not suffering from CTE," said Dr. Ann McKee, the director of the Department of Veterans Affairs' brain repository in Bedford, Mass.
Notable former NFL players that suffered from CTE include legendary linebacker Junior Seau, Mike Webster who is a Hall of Fame center, Dave Duerson, and Chris Henry.
Seau and Duerson both shot themselves in the chest so they can presumably have their brains studied after their death.