Study Shows Toll on Brain in Former Football Players

A new study shows that the vast majority of former football players whose brains were donated for research showed signs of severe trauma, reinforcing the dramatic toll the sport can take on its participants.

The report in the Journal of the American Medical Association found that 87% of the 202 donated brains of former high school, college, semiprofessional and pro football players showed signs of chronic traumatic encephalopathy, or CTE, a progressive neurodegenerative disease caused by repetitive head trauma. Of the former NFL players in the sample, 110 of the 111 brains showed symptoms of the disease.

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