What is chronic traumatic encephalopathy?

POSTED: 05:48 PM MDT May 06, 2012    UPDATED: 06:40 AM MDT Jul 08, 2014 
brain

The NFL has reached a preliminary settlement in a lawsuit filed over player concussions. Find out more about chronic traumatic encephalopathy, the disease several former NFL pros claim they are now suffering from due to hits on the field.