“There is still a lot to learn about CTE. Who gets it, who doesn’t, and why? Can anything be done to stop the degeneration once it begins? How many blows to the head, and at what levels, must occur for CTE to take hold?” We have a lot to learn, but here’s what we do know. One hundred-eleven brains of former NFL players were donated to science so a neuropathologist could assess the damage. Of those, 110 showed signs of chronic traumatic encephalopathy, or CTE. A full breakdown from the NYT: 110
NFL Brains.