Most older studies that gave coconut oil a bad rap involved partially hydrogenated oil loaded with trans-fatty acids. But the unrefined virgin coconut oil now available in many health food stores is not chemically treated and is trans-fat free. Marisa Moore, a spokeswoman for the American Dietetic Association, a nonprofit organization of nutritionists, explains that the main saturated fat in virgin coconut oil is lauric acid, a medium-chain fatty acid that can help increase levels of HDL (good cholesterol).