Listening to matthew walker speaking on joe rogan, he said there was a huge correlation between getting little sleep and getting alzheimer's.

I also think having good circulation is important. I also remember reading that people who took viagra had lower chances of getting alzheimer's as well. viagra helps with circulation.

(so, sleep well and exercise)

I also find it amusing the article doesn't point to lifestyle changes as a possible answer, but to a possible drug solution :)