CTE

Levy is the latest NFL player to speak out on the danger of the game.
It took just eight words: "Fighting raises the incidence of head injuries/concussions."
Husain Abdullah's words come just two weeks after the NFL admitted a link between head trauma and CTE.
This is the first time a top league official has acknowledged football injuries are linked to the brain disease.
The soccer legend is the most high-profile female athlete to promise the organ to CTE research.
"Every case of diagnosed CTE has had one thing in common: a history of repetitive hits to the head."
Concussions increased 32 percent in this past season from the previous one.
Earl Morrall suffered from a degenerative brain disease believed to be caused by repeated blows to the head.