Anderson Cooper speaks with Dr. Sanjay Gupta about the devastating brain injuries caused by hard hits on the field. Watch his documentary "Big Hits, Broken Dreams" on Sunday, January 29 at 8 p.m. and 11 p.m. ET.
Anderson Cooper speaks with Dr. Sanjay Gupta about the devastating brain injuries caused by hard hits on the field. Watch his documentary "Big Hits, Broken Dreams" on Sunday, January 29 at 8 p.m. and 11 p.m. ET.