NFL players at greatly increased risk for Alzheimer's

A new study has confirmed that NFL players suffer from Alzheimer's Disease far more frequently than the general population- including a 19% greater frequency than other men in their late thirties and early forties.

Hmmmm. Why do you think that is? Blows to the head? Lead in the training table diet?
Neural damage due to touchdown celebration trauma?

HT: Drudge