You do realize the reason people now die of dementia is because medical science and improved standards of living have largely eliminated all the things that use

You do realize the reason people now die of dementia is because medical science and improved standards of living have largely eliminated all the things that used to kill them before they got old enough to develop it? The same goes for cancers. As for heart disease, that’s largely a product of lifestyle choices: smoking, obesity, inactivity. And doctors already tell their patients to eat healthily and exercise daily, but who wants to hear that when they’re young enough not to feel the consequences, or old enough not to want to change their ways now? Hence the eternal market for easy, quick magical pills and their silver-tongued salesmen that promise to cure it all. We began as a species programmed to spot the difference between a zebra and lion on the plains of the Serengeti, and we’ve barely evolved since—if anything, we’re even easier to hack now. Just ask the vampires.