Dave Duerson, a former Chicago Bears safety, was found dead Thursday in Florida at the age of 50.
His death was ruled a suicide due to a gun-shot to the chest, according to the New York Times. Duerson's brain was left intact and, therefore, able to be examined for a brain injury called chronic traumatic encephalopathy (CTE), a wish he expressed to his family in text messages. Dr. Keith Black, M.D. is the Chairman of the Department of Neurosurgery at Cedars-Sinai Medical Center in Los Angeles and talks to T.J. Holmes about Duerson's death and CTE.