The American Heart Association's Position
Where does the American Heart Association weigh in on coconut oil as an aid to weight loss? "I would be very pessimistic about this, says Robert Eckel, MD, the Association's spokesman on nutrition. He says he's concerned about the effects of high levels of saturated fat. "This is going to be a cholesterol-raising diet."
He says he also doubts claims that coconut oil can boost metabolism. "People have looked in the past as to whether MCTs have thermogenic properties, and I think the answer is pretty well negative. Generally, saturated fats tend not to be as well [metabolized], so if it does have any ability to promote heat generation, it's going to be minimal."
Eckel says coconut oil's effect on metabolism, if any, is modest compared with the potential for raising overall cholesterol and particularly "bad" LDL cholesterol. "Ingesting coconut oil for a short period of time will not do harm, but I'm concerned about the long haul."