M0nica
Age has got very little to do with it. My father lived to 92 and was still an active committee member of three local organisations.
A dear friend recently died of dementia at 75
Agreed, not about age. My dad was the same aged 96, until he died of a broken heart.
It's not about age- some of it is genetic, but most is due to lifestyle. Keeping active, physically (walking is the best, or swimming), socially, go out, meet people, and learn something new every day. Doesn't have to be fancy, academic stuff either. But repetitive memory tests like Sudoku, don't help. It has to be new stuff- crochet, a card game, a bit of a new language, the list is endless.
And if you want to keep driving- do it daily or as often as possible. Don't let your DH drive you everywhere, and hope you will remember how to when he can't anymore.
Eat well and healthy, don't smoke, and drink in moderation. And daily concentrated curcuma- proven to help reduce the inflammation that causes brain issues (and joints, win win).