If we manage to keep organs ticking along for another 50/70 years, is that really a win? Currently 2/3rd of people get a form of dementia by 80, so hitting the

If we manage to keep organs ticking along for another 50/70 years, is that really a win? Currently 2/3rd of people get a form of dementia by 80, so hitting these numbers sounds like a recipe for a troubled society. I’d like to see a similar study but for the longevity of the human brain/mind.