I think we can generalise that statement to "nobody expects to have dementia". Until you get it :/
There are people taking lots of vitamins, but with apologies to any vitamin-takers, that hypothesis seems to have been thoroughly debunked.
For healthy adults, taking multivitamins daily is not associated with a lower risk of death https://www.nih.gov/news-events/news-releases/healthy-adults...
Metformin exerts a substantial neuroprotective effect, preserving brain structure and enhancing cognitive ability.
We obviously want additions or replacements to physical and mental exercise depending on how much we get.
Nothing is assured.
Yeah, maybe we will be all unemployable and miserable due to LLMs taking our jobs and failing to create others. Maybe we shouldn't have reproduced as our kids will never get to become adults due to a nuclear war or a fucking serious pandemic with a virus that will make SARS-COV-2 look like nothing.
Who knows?