I can see this. I know several players and the older ones are obviously affected.
That said, high risk brings high reward.
“A test developed by researchers at UCLA could use a routine PET scan to check players for evidence of chronic traumatic encephalopathy, a degenerative neurological disease that has been linked to repeated head trauma and until now could only be diagnosed posthumously.”
http://www.wired.com/2013/01/pet-scan-cte-test/
Can also be used for vets and active who have been through IED explosions or even vehicle rollover training, etc.
I wonder how many brought the problem with them from college, and, then, how many were inflicted from their high school days.
Then, we must ask how many played soccer in grade school, where advancing the ball with a header was prevalent.
Someone should study the brains of liberals, not NFL players.