I have to wonder..why the concern of the violence of football- with helmets- and why poor fighters world over get their brains beaten out everyday?
You know the answer. Hell,it took until NFL players became paid like CEO's of Facebook before any interest in them started.
MMA,Boxing,WWXXXTT or what ever is the new sport-" Fighting with HIV!"..as long as poor boys and girls are involved no concussion study's will ever be done.