Chris Benoit was a professional wrestler. He was a former World Heavyweight Champion. He had a history of concussions and took doctor prescribed steroids. His career lasted for over 20 years, but it all fell apart when he killed his wife Nancy and his 7-year old son Daniel. Out of remorse, he placed bibles near their bodies and then hung himself. His autopsy has shown that his brain resembled an 80-year old with Alzheimer's.