On Tue, 6 Aug 2013 21:24:43 -0400, "Eisboch"
wrote:

I think some people are just predisposed to heart attacks. I had a
good friend in his early 50's who exercised, ate right, and ran at
least 5 miles a day.
He was in apparent excellent health until we received a phone call
from his wife one morning. He had a massive heart attack in the
middle of the night and was gone in a matter of minutes.

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It is fairly well understood that some people are genetically
predisposed to very high cholesterol levels. If not detected and
treated at an early age, they are very prone to early heart attacks.