Just two weeks into the NFL season and already, the concussion headlines are everywhere.

In Tom Brady’s new book, out Tuesday, the star quarterback writes that “playing football for a living was like getting into a car crash every Sunday – a scheduled car crash…” And for parents whose hearts are stricken with fear hearing those words, thinking about their own kids playing just got worse.

A study released by Boston University’s Chronic Traumatic Encephalopathy (CTE) finds kids who participate in tackle football before age 12 have an increased risk of emotional, behavioral and cognitive issues later in life.

Co-founder and executive director of the Concussion Legacy Foundation, Chris Nowinski, who authored the book “Head Games: Football’s Concussion Crisis,” and Doctor Robert Stern, who serves as director of clinical research at BU’s CTE Center and co-authored the study, joined Jim to discuss the findings of this latest research.