That’s a good point with probably a complex answer that needs a lot more research. From the article, > “the work of the Boston University C.T.E. center, which

That’s a good point with probably a complex answer that needs a lot more research. From the article, > “the work of the Boston University C.T.E. center, which found evidence of degenerative brain disease in 99 percent of brains obtained from deceased N.F.L. players and 91 percent of college football players and 21 percent of those who played high school football.” Of course there’s a causality problem here as to whether people who died and thus could have their brains examined are simply more susceptible to the concussive effects, but you may also suggest that, unless we can diagnose those people ahead of time, it doesn’t matter because it represents some fraction of players taking a far more serious health risk without knowing it, especially for the 1/5 number among high school athletes. Further, the article mentions lots of other problems beyond explicit CTE issues, like migraines, nerve damage, shakes and memory lapses. It brings up all kinds of questions about child welfare, acceptable risk, exploitation of poor athletes, association with a college scholarship, and so on.