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High Percentage of Ex-NFL Players Had Brain Disease: Report

(Reuters) - All but four of 91 former National Football League (NFL) players who donated their brains for research were diagnosed with a disease linked to concussion and head trauma, according to the Concussion Legacy Foundation.

The foundation said on its website that the study, conducted by the United States Department of Veteran Affairs and Boston University, found that the players had chronic traumatic encephalopathy (CTE).

CTE is a degenerative brain disease that affects memory and judgment. Perhaps better known by the term "punch drunk", CTE is sometimes found in people with a history of head trauma and concussion.