After my heart surgery, the cardiologist, surgeon, doctors, nurses, rehab, all stressed that smoking (I quit in 1990) salt, (I no longer use), lack of exercise (I now walk 2 miles a day) stress (I'm more relaxed) bad cholesterol( take meds) and fatty diet (That's a tough one) are all reasons for heart disease.

Then they all mentioned hereditary. And not much can be done about that.

The best advise I was given was enjoy life, try to extend it by adhering to the above, but you don't really want to pass away unhappy.