Just Playing Football Can Cause injury to a Teen's brainPlaying football may affect a teen's brain even if they don't sustain a concussion http://linkis.com/abcnews.go.com/Healt/AvzLd
Playing football may affect a teen's brain even if they don't sustain a concussion http://linkis.com/abcnews.go.com/Healt/AvzLd
