Grandfather - high stress job, smoked two packs of unfiltered cigarettes & drank a pint of bourbon every day for 30 years. Died of heart attack age 57.
My father - a mellow fellow, low stress, never smoked & only drank beer when carbo-loading before a marathon. Ran 10 miles or more every day rain or shine & 2 marathons a year for 30 years. Died (running on a track, no less) of heart failure age 54.
Me, I'm just going to lay down and not eat anything, and count out 2 billion heartbeats, see how that works out.

But I'm interested to see if anyone busts out the science.