My grandmother did the opposite of my mom (ate horribly, lots of pastries, drank and smoked all her life), but was never overweight. She received her diagnosis at 62. My mom gave up a lot hoping to avoid dementia and it didn’t work out for her.

I’ve taken it to the extreme. I grow my own food (which I really enjoy). I know what’s being used for fertilizer and pest control, no hormones in my meat, etc. I use stevia (which I grow) instead of sugar, etc.

Edit to add: we may never know if my way of life prevents dementia. It is a lot of physical work (which I thinking very good for you), but I plan to live pretty dangerously after 60. I don’t really plan to see 62.