What is chronic traumatic encephalopathy?

Published On: May 06 2012 06:48:36 PM CDT   Updated On: Oct 25 2013 12:57:01 PM CDT
brain

Quarterback Brett Favre recently opened up about some memory lapses, which be a sign of chronic traumatic encephalopathy. Find out more about this disease and some of the professional athletes who have suffered from it.