I know people that don't have those tough backgrounds. They've smoked a lot and now in their late 60s. Mostly successful people and maybe it's just old age but

I know people that don't have those tough backgrounds. They've smoked a lot and now in their late 60s. Mostly successful people and maybe it's just old age but they have signs of significant cognitive decline. Is an anecdote not data but it scares the crap out of me.