Sorry to hear about your dad. How old was he? I assume he was Indian given your username. South Asian ancestry is a risk enhancer for heart disease, unfortunately. Being Indian myself, I have so many stories of relatives (esp male) dying of MIs and sudden cardiac deaths at ages 40-50s. I didn’t even consider this unusual till after growing up and esp after caring for ppl of other backgrounds.

There’s no clear/satisfactory answer as to why South Asian patients have so much more heart disease, but the evidence does suggest we should be adopting more aggressive targets of risk parameters for them (A1c, LDL, BP, weight, etc.), and the clinical guidelines likely will reflect this in the future.