brain. it raises a lot of concern about the long-term consequences of the game. here to talk about it is assistant professor of neurology at the icon school of medicine in mount sinai hospital here in new york city. dr. joshua cohen. wow. you know, we saw this report this morning, and so much focus has been on concussions, specifically in the nfl and with college football players, and now this study shows that the white matter in the brain becomes abnormal just from playing the game. what are we to make from this? we know there are changes in the brain, and a lot of people have thought that probably even what is called subconcussive hits, the hits that don t cause symptoms of concussion probably have impact on the brain. we don t know what the implication is of that. so there was another analysis done on 80 division i sports players, college, ice hockey, football, that sort of thing. they found the more the brain changed, the worse the athletes did on learning and memory