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Yes, US football and boxing are very bad for the brain. Plenty of evidence.
Plenty of evidence.
Any that you find particularly clear and compelling?
If it's worth saying, but not worth its own post, then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should start on Monday, and end on Sunday.
4. Unflag the two options "Notify me of new top-level comments on this article" and "