Hearsay With Cathy Lewis

Of the 44 million kids and young adults in the United States playing organized sports each year, at least one-half million are treated for traumatic brain injury. Because concussions and brain injury are not readily observable, they are often treated like invisible wounds and ignored by coaches and parents. Today we're joined by one of the nation's foremost experts on brain heath for a look at the dangers posed by untreated concussions and traumatic brain injuries.