I have a different issue with the direction that CTE "research" is taking. This study is of 202 brains of football players at any level, with 111 being of NFL players (I don't have the article in front of me, so the numbers may be off). So, we know they're all dead. We also know that they likely had some signs or symptoms that led them to donate their brains in the first place. The likelihood of finding CTE is therefore already very high. No research is being reported, to the best of my knowledge, that actually looks at the incidence of this in other settings. There is no comparison to a control in these studies. They are all descriptive studies, and yet they are using these studies to ascribe risk. I'm not so naïve as to think hitting your head doesn't cause damage, so I'm sure there is risk associated with playing football and other contact sports. I just think that the way the research on CTE is being reported in the media for all to draw their own conclusions is poor form. The scientists doing the research and reporting results through the media should know better, IMO.