Brain Disease and NFL Players
The average lifespan of men living in the United States is around 76.4 years. However, for men who have played professional football, that number drops to just 55 years. Along with a much shorter lifespan, football players are five times more likely to develop some form of mental impairment and four times as likely to die from either ALS or Alzheimer's.
This timeline shows the relationship between a career professional football and the development of brain disease after retirement. The grey bars represent the player's career, while the red bars stand for the length and time of diagnosis. Overlapping bars mean that the player began showing noticeable signs of brain disease while still in the NFL.
Additionally, the diagram contains further information about each person's diagnosis and life after football to the right of each lifespan.