These ?good? fats should make up about 15 percent of your total calories. Both polyunsaturated and monounsaturated fats are better than saturated fats because they may aid in lowering cholesterol. But remember they are fats and should still be used sparingly. They are not a license to add oil; their calories do count.
One type of bad fat to eliminate entirely is trans fat, also known as partially hydrogenated vegetable oil. Trans fats are formed during a process called hydrogenation, which transforms liquid oil into shelf- stable solid fat. Trans fats clog arteries, and are found in many packaged cookies, crackers, snacks, and other processed foods.
Diet Myths That Keep Us Fat by Nancy Snyderman, M.D.
? 2009, Crown.
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