Smoking causes cancer, drinking causes cancer, microwaving cling wrap causes cancer, living in the city causes cancer..........
How about we stop trying to make ourselves live beyond what we are natural meant to do. Why do you think there is such an issue of dementia in the older generation? Simple, our brains were not designed to last that long, we have managed to cheat death with modern science, but we haven't solved the fact that our brains are dying by that age.......