No idea how true this is because I've not look into it all that much, but I believe some people believe alzheimer's disease to be a kind of 'diabetes of the bra

No idea how true this is because I've not look into it all that much, but I believe some people believe alzheimer's disease to be a kind of 'diabetes of the brain'. I think I'm right in saying it's linked to inflammation so if you're in an inflammatory state say because you're diabetic, get little exercise, have poor sleep, etc you're more likely to develop alzheimer's. My guess and I'm almost certainly wrong, but it could simply be that the people who are doing crosswords regularly are in a cohort of people that's less at risk of alzheimer's generally. I agree with you that it seems odd that cognitive tasks would be protective of alzheimer's (given what I understand of the disease), but I'd imagine those who do crossword puzzles regularly eat better, get better sleep and get more exercise. Would be interested if anyone can shed some more light though..