Dr. Ann McKee, an associate professor of neurology and pathology at Boston University who has been studying the brains of deceased football players, wanted to illustrate the damage that repeated hits to the helmet can cause. This slide of a cross-section of a human male brain, magnified 100 times, showed scores, maybe hundreds, of tiny brownish triangular bits of a toxic protein called tau, choking off cellular life in the brain.
Get the Longreads Weekly Email
Success! You're on the list.
Whoops! There was an error and we couldn't process your subscription. Please reload the page and try again.