There must be major genetic component to heart attacks. They run in some families, and, as the article says, being South Asian is in itself higher risk. Then there are the counterexamples. My grandma ate like pig (as a kid, I couldn't even tolerate the smell of some foods she enjoyed), was fat for most of her life, her blood lipids were all over the place, she never exercised and died of cancer aged 90 with negligibl…
What did she eat? There's a massive difference between gorging in meat and vegetables or donuts and fries. Not all food is the same.
Her cholesterol was something like 9,5, often exceeding 10. She also smoked for 30 years, but stopped around 65 years of age.
Theoretically, her arteries should have been clogged like crazy. They weren't.