omalu then. the same question that i asked brett to start, are you worried as you prepare to maybe sit down in front of the tv on super bowl sunday, maybe you won't watch it, are you concerned about it? >> thank you, christiane. i stopped watching football about five years ago, because i just couldn't get myself to watch it. as a physician and a brain expert, in every play of football, there is a blow to the head. in fact, a paper recently came out from stanford university that showed that in just one game of football, a player is exposed to about 50 to 60 violent blows to the head. and some of those blows are like a car traveling at 30 miles an hour, slamming into a brick wall. and so we, we need to realize that it's not about the concussions. you can play through just one game. like on super bowl, after just one game, many of those players have suffered irrepairable brain damage. >> brett, i would like to show you this clip from the documentary "shocked" that you executive produced and were in

fo> a rensic pathologist ben it omalu on the cngers that tact sports pose to a child's brain. >>> thet door talks a helping neighbors tear down walls online. and the first african-american woman to be inducted in thesi adver hall of fame reveals how created campaigns. hlo and welcome. i'm thuy vu. we begin with sports and concussions. actor will smith played him in a film "concussion," it chronicled the fight to get the nfl to to traumatic brain

fo> a rensic pathologist ben it omalu on the cngers that tact sports pose to a child's brain. >>> the co-founder of next door talks a helping neighbors tear down walls online. and the first african-american woman to be inducted in thesi adver hall of fame reveals how created campaigns. hlo and welcome. i'm thuy vu. we begin with sports and concussions. actor will smith played him in a film "concussion," it chronicled the fight to get the nfl to to traumatic brain athletes who have sustained repeated wloes to the head and he's written a book for parents who struggle with allowing the children to play. joining me now is the author of "brain damage in contact sports," dr. bennett amalu. >> thank you for having >> the winter olympics are under way. sports are on a lot of people's minds. what should parents of children under 18 know about contact sports? >> well,it's always been my position knowing what i know that no child the age of 18 should play the high mpt, high contact sports. the big six are american football, ice hockey, mixed martial arts, boxing, wrestling, and rugby. in these g

. >>> a forensic pathologist ben it omalu on theth dangers contact sports pose to a child's brain. >>-founder of next doo talks about helping neighbors tear down walls online. and the first african-american woman to be inducted in the advertising hall of fame reveals how created campaigns. hello an welcome. i'm thuy vu. we begin with sports and concussions. ac pr will smithlayed him in a film oncussion," it chronicled the fight to get the nfl to to traumatic brain