If you did not read the book League of Denial, or see the PBS documentary, the new movie "Concussion", hitting theaters on Christmas Day is another opportunity to learn a little bit more. The movie is a dramatization of League of Denial, detailing the story of Dr. Bennet Omalu and his attempts to get the NFL to recognize the dangers of repetitive head trauma. You can view the full trailer above.
Dr. Omalu was the first doctor to identify Chronic Traumatic Encephalopathy (CTE) as a disease impacting football players following repetitive head traumas. He initially discovered the issue when doing an autopsy of former Steelers great Mike Webster.