Nonconcussion Head Impacts in Contact Sports Linked to Brain Changes and Lower Test Scores

http://www.sciencedaily.com/releases/2013/12/131211185554.htm

Dec. 11, 2013 — Repeated blows to the head during a season of contact sports may cause changes in the brain's white matter and affect cognitive abilities even if none of the impacts resulted in a concussion, according to a study published today in the journal Neurology.

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