Well, that assumes that High Cholesterol is indeed the problem, which is by no means clear. Heart Disease is the real problem, and Dravidians don’t seem to be immune from it, they may even have a higher risk.
Low cholesterol doesn't necessarily give you protection against heart trouble.
My latest readings were:
CHOLESTEROL 134
CHOLESTEROL, NON-HDL 103
CHOLESTEROL, HDL 31
CHOLESTEROL, LDL 59
And, I know what all of this means ~ to wit: 134 is good, 103 is good, 31 is bad, 59 is good.
That I haven't had a significant change in over a decade is good. I've been working on the low HDL reading ~ when combined with a high LDL reading that's really bad ~ but no matter how much exercise I engage in, or what foods I eat over long periods of time, the readings don't budge.
My father is in his 90s and he has comparable readings ~ except his HDL is even lower.
It is presumptively HEREDITARY and under special circumstances it has a selective advantage. We think it has to do with eating a diet of almost nothing but sea mammals for several thousand years. This gives you a running start in the cholesterol sweepstakes. I am sure that if I could import canned seal from nearby Canada I could FIX my cholesterol problems in just a few months ~ maybe get those readings at least half way up to normal.