Researchers pinpoint when football players are most likely to develop trauma-induced brain disease

For football players, the risk of CTE, a degenerative disease of the brain, develops over time. For researchers, the next step is learning to detect the disease in living humans. Three years ago, Dr. Ann McKee of Boston University published findings that among 111 deceased NFL players, 99% showed signs of chronic traumatic encephalopathy (CTE), brain degeneration that is believed to be caused by repeated head trauma. The research made waves across the football-playing world, from the grade-schoo...