My mother is 85, has smoked for about 60 years, does not have any cancers but does have Alzheimer’s. Anything else you two want to add?
My mom died of Alzheimer's disease at 82. She never smoked, drank, became obese, had any cancers, etc. I am quickly coming to the conclusion that whether or not one gets Alzheimer's is a roll of the dice, nothing more.