has had an effect. I know a few people in my neighborhood who won't let their kids play Little League football due to their concern about concussions.
My son got on his Sophomore year in HS. My wife said if he got one more, he was done. Dude made it through another 2 1/2 years and was starting LB during that time. Every play i wondered if it was going to be his last.
He got blindside blocked on a punt return and laid on the ground for about 60 seconds. I thought his career was over. Luckily, it was just the wind knocked out of him. But, HCBW as already telling me while he laid there "this is it. He's done. No more."