Dr Enas is a world expert on heart disease among Indian sub-continent populations. Excerpts from Coconut ─ More Dangerous than you Thought (CADI Research) by Dr Enas:
International differences in heart attack rates are best explained by a difference in blood cholesterol level than any other factor.[1] The foremost determinant of high total cholesterol (TC) level is the consumption of saturated fat (SAFA), which is abundant in all edible coconut products (meat, milk, and oil).
One table spoon (14 gm) of coconut oil contains 126 calories of total fat of which 93 calories is cholesterol-raising SAFA.4 Although coconut products does raise HDL the LDL-C raising is several times higher.[9]
Kerala, renowned for the universal and liberal consumption of coconut meat, milk and oil, not only has the highest level of total cholesterol in India, but also the highest rate of CAD, diabetes, and metabolic syndrome.[13, 14] The proportion of subjects with high total cholesterol (>240 mg/dL) in Kerala is double that of the U.S. (32% versus 15%).[15] The average cholesterol in Kerala is 30-40mg higher than the rest of India (see Kerala Paradox and Kerala Heart Disease).[16, 17] The use of coconut oil as a cooking medium has not spread beyond Kerala and its adjoining areas.
In Sri Lanka, which also has a very high rate of CAD, about 80% of the fat in the habitual diet comes from coconut.[18]
Coconut meat and milk are universal ingredients of cooking in Kerala accounting for a greater proportion of saturated fat consumption than from coconut oil. 3 oz of coconut meat or 3oz of coconut milk contains 12-14g of saturated fat─ the same amount as in one tablespoon of coconut oil. This amount alone provides the saturated fat allowance for the whole day for most individuals.
One serving of coconut rich foods such as palappam, vattaappaam and vegetable thoran and even fish curry may contain no coconut oil, but may contain more than a day’s allowance of saturated fats.[19] Failure to account for the liberal consumption of coconut meat may account for the discordant results of studies from Kerala and elsewhere.4 The calories from 100 grams of fresh and dry coconut are 444 and 662 respectively with most of it being from saturated fats.[23] (for detailed info on most of the Indian foods and latest Dietary Guidelines for Indians click here)
Cholesterol-raising effects of coconut oil are similar or higher than that of butter and meat.[7, 20] In a comparative study of diets rich in beef fat vs. coconut oil, the plasma total cholesterol, LDL, and HDL responses were lower with beef fat than coconut oil commensurate with the lower proportion of cholesterol-raising saturated fat in beef (29%) than coconut oil (74%).[21]
When 22% of the energy intake in a Malaysian diet, high in palm oil, was substituted with coconut oil, there was an increase of 40 mg/dL in total cholesterol, 29 mg/dL in LDL, 36 mg/dL in triglycerides and 4 mg/dL in HDL.[22]
Substituting 21% of daily energy from a high-beef American diet among medical students resulted in 13 mg/dL increase in total cholesterol (TC) with high coconut diet and 14 mg/dL decrease in TC with a high safflower oil diet.[21]
Since coconut milk and oil have the highest proportion of saturated fat, the use of these products should be limited to <1 tablespoon a day even when the diet contains no other sources of saturated fat.[4]
Liberal use of all coconut products except tender coconut water should be discouraged along with all other sources of saturated fat.