heart attacks happen as a result of an inflammatory process. So, you see, they can happen to anyone. You can eat right, exercise daily and be fit as a fiddle, but if you don't get check ups regularly so a doctor can test for the inflammatory markers
in the blood... you have a heart attack that seems to come from out of the blue. I'll bet he thought he didn't need to see a doctor because he felt fine.... he should have had annual checkups, these markers show up well before a heart attack occurs.