Why did so many actors die of "heart attacks"
I've looked up many actors age and cause of death and so many actors (especially from the '40s-'60s) died in their 40s supposedly of heart attacks. I mean I know acting is a stressful profession, but really?! Is it possible some of them were murdered and listed as heart attacks? Of course the smoking, drinking, etc. didn't help. Anyway here's a short list of some of them:
Cleo Moore age 48: heart attack
David Janssen age 48: heart attack
John Candy age 43: heart attack
Chris Penn age 40: enlarged heart
Brittany Murphy 32--heart attack
James Gandolfini 51- heart attack