Football is dangerous. Parents are finally steering their kids away from it.

When the NFL season kicks off next month, millions of Americans will gather around their televisions to watch athletes of comic book proportions crash into each other at breathtaking speeds. Inevitably, those players’ heads will smash into each other, leaving them dazed on the field. And according to a major new study, these repeated head-on collisions may eventually lead to a degenerative brain disease for many — if not most — of the players long after they’ve left the field. For years now,…