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Report says 87 of 91deceased NFL players test positive for brain disease

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Posted at 1:03 PM, Sep 18, 2015
and last updated 2015-09-18 16:35:01-04

BOSTON — Eighty-seven of 91 former NFL players who donated their brains to science after death tested positive for a brain disease that is believed to be linked with repeated head trauma and concussions, researchers said.

The former players were found to have had chronic traumatic encephalopathy, known as CTE, according to the U.S. Department of Veterans Affairs and Boston University.

It’s not clear why some players develop the disease and others don’t.

The data was published on the website for the Concussion Legacy Foundation and first reported by the documentary TV program “Frontline.”

MORE: Keeping young players on football field after recent NFL head trauma study