It's interesting that soccer is now going to have to deal with this as well. It's funny, but when I was younger and played the game, I hated heading the ball, and used to do everything to avoid it. I wouldn't claim any great insight, but I just didn't like the feeling of it, and I think I did have an inkling that it can't be good for you.
I watched a documentary about the 85 Chicago Bears, and they were talking about Jim McMahon having major mental, emotional and psychological problems now due to stress injuries, and he was the quarterback, so he was spared a lot of the concussive activity. When you look at some of the stuff that goes on in that game, it's pretty crazy.
I haven't watched it yet, but I've recorded an ESPN documentary on the USFL, which includes Trump's involvement in supposedly killing it. I don't know how true that is. I also watched one about the XFL, set up by the guy who owns the WWE. That was extremely interesting.
It's sad that it's been such a divisive time in the States, hopefully this won't continue.