I visualize the Grim Reaper in the Ingmar Bergman/Woody Allen style, with the black robes, hood, skull face, and a scythe. I played one once in a college production.
My dad had a heart attack in his forties, and was taking nitroglycerine and digitalis, so I think I've been lucky. The only pill I pop is ibuprofen for pain.
I did have an ulcer at 40, but it had been a stressful year leading up to it, no problem like that since.