High school football players showed significant changes in brain structures after one season of practice and games, even though they have not suffered clinical concussions, researchers reported at the annual meeting of the Radiological Society of America. 

“Our imaging study found that increased cumulative impact exposure over the course of a high school football season — even when there is no evidence of concussion — is associated with white matter changes in the brain,” said Christopher Whitlow, MD, PhD, from Wake Forest School of Medicine in Winston-Salem, N.C, and colleagues.

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