He looks like did not have a weight problem from his pictures. Seems rather clean cut overall.
Appearance of weight is not the only answer for heart attacks. I have congenital heart failure and when I started it I was 6’1”, 185 pounds and running at least 2 miles a day with the military.
A good article to see some of the many problems with the heart is this one from the MAYO:
https://www.mayoclinic.org/diseases-conditions/sudden-cardiac-arrest/symptoms-causes/syc-20350634
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