science

I'm 60 (first year Gen X) and for the past 16 years I've placed diet and exercise at the top of my list of priorities for me. It's made a world of difference.

Also, I've never drank, used recreational drugs, or smoked anything.

Everyone knows what they should do, they just don't want to.

Yes, it's healthcare, too, but if you don't take care of yourself first, there's not much a doctor can do.