The NFL estimates that nearly three in 10 former players will develop debilitating brain conditions, and that they will be stricken earlier and at least twice as often as the general population. Both the league and lead players' lawyers expect 28 percent of the men will develop Alzheimer's disease or at least moderate dementia. Dozens more will be diagnosed with Lou Gehrig's or Parkinson's disease during their lives, according to the data. District Judge Anita B. Brody, who is presiding over the class-action lawsuit in Philadelphia that accuses the NFL of hiding information that linked concussions to brain injuries. More...