Does soccer cause dementia?
"The English Football Association will ask FIFA to investigate whether former players have dementia as a consequence of brain damage from playing the game.
Three members of England’s 1966 World Cup squad – Martin Peters, Nobby Stiles, Ray Wilson – have Alzheimer’s, family members told Saturday’s Daily Mirror newspaper."
See http://thenewdaily.com.au/sport/2016/04/10/fifa-asked-study-dementia-soccer-link/
I can't think of any other activity involving so many people that routinely involves hitting something with your head.
BARAK - I don't think Boxing does the old brain much good either. Look at Mohammad Ali, Parkinson's which is close to Dementia . What about Rugby League and American Gridiron, some nasty brain injuries there. You only have to hear some footballers being interviewed and you can't understand what they are saying. I think all ball game sports should wear helmets, especially the young ones.