Kansas City Chiefs cornerback Brandon Flowers (24) appears to hit the ground hard for a possible head injury and is attend by a Kansas City Chiefs medical staff for evaluation in action during the AFC Wild Card football game between the Indianapolis Colts vs Kansas City Chiefs at Lucas Oil Stadium in Indianapolis, IN. | MSA/Icon SMI/Corbis via Getty Images

More Evidence Links Former NFL Players and Brain Disorders

While career NFL players aren't necessarily dying younger, they are getting diseases like ALS at much higher rates.

American Medical Association