Right. Heritability may be a factor, but isn't the "Indian problem" more about body morphology than it is about something specific to the sub-continent gene af

Right. Heritability may be a factor, but isn't the "Indian problem" more about body morphology than it is about something specific to the sub-continent gene affecting the heart directly? For example, ectomorphs (irrespective of ethnicity) are susceptible to the phenomenon, in bro-science parlance, called "skinny fat". That is, they look skinny everywhere (wrists, face, chest, calves) but the abdomen. Abdominal fat is the dangerous fat and it probably remains "unnoticed" in the skinny-fat group - until it is too late. Someone who packs fat in ample quantities everywhere is probably more likely to notice (or be noticed and informed about it) and then take corrective action.