A number of the brains studied by doctor Ann McKee and her researchers. Almost all of the brains McKee has studied were found to have CTE.
George Gojkovich via Getty Images
Almost all of the tested brains exhibited signs of chronic traumatic encephalopathy (CTE).
Former NFL running back Kevin Turner suffered from the most advanced stage of chronic traumatic encephalopathy, or CTE, a degenerative disease linked to repeated brain trauma, when he died at age 46,...