Statistically, more of us will succumb to heart disease than any other cause. We can try to mitigate the odds with our diet and behavior but we can't control genetics.
I smoked those damn cigarettes for 20 years and drank myself into an ulcer and have never had any control of my diet yet I think I'm ok for now. I think if there are no underlying heart issues than it's ok to push one's body which is why I still do the rides I do. I don't see the point of worrying about it, I worry more about getting flattened by some moron who's texting while driving.