The most extensive examination to date of deceased athletes’ brains shows that most had signs of brain damage after suffering repeated head injuries — including two high school football players who died in their teens.
The study, to be published Monday by Boston University School of Medicine researchers, reports on the autopsies of 85 brain donors, most of them professional athletes. It comes as concerns mount over the dangers of head injuries in contact sports and some call for banning tackle football for younger children.

Comments
Oh, please! Any parent who lets their kid play any sport, or box, for that matter, is irresponsible and is willing to risk their child's brain function for the short run of success and excitement in a sport. I have heard every excuse (this includes from family members) as to why they must cave in to the kid's please to play a sport that results, all too often, in brain and joint injuries. I am sorry, I think that they parents are irresponsible and in major denial. The schools collaborate in this hoax that "athletics are good for development" and justify any sport on that premise. High schools and colleges are all guilty for financing these dangerous sports. It is sickening. Schools should not have football teams, play hockey or allow boxing. Period.
Pop Warner shouldn't exist, and no responsible parent should allow their children to participate in punishing sports. Some say there's no definitive proof. It's pretty convincing to me, but do you wait for "definitive" proof while your child may be suffering permanent damage? Will it make any difference if you get the "definitive" proof after the damage is done?
In my opinion, parents need to have the guts to say "No."
I wish to correct my last post. I meant to say "any sport that is thought to risk head or joint injury".
I have never been impressed by college football games. They use a student's body to make money for the school, allowing risk to the health of that player.