Trans Fat

Unlike other fats, the majority of trans fat is formed when liquid oils are made into solid fats like shortening and hard margarine. However, a small amount of trans fat is found naturally, primarily in some animal-based foods. Essentially, trans fat is made when hydrogen is added to vegetable oil -- a process called hydrogenation. Hydrogenation increases the shelf life and flavor stability of foods containing these fats. Trans fat, like saturated fat and dietary cholesterol, raises the LDL (or "bad") cholesterol that increases your risk for CHD..

Although saturated fat is the main dietary culprit that raises LDL, trans fat and dietary cholesterol also contribute significantly. Trans fat can often be found in processed foods made with partially hydrogenated vegetable oils such as vegetable shortenings, some margarines (especially margarines that are harder), crackers, candies, cookies, snack foods, fried foods, and baked goods.

When comparing foods, look at the Nutrition Facts panel, and choose the food with the lower amounts of saturated fat, trans fat, and cholesterol. Health experts recommend that you keep your intake of these nutrients as low as possible while consuming a nutritionally adequate diet. However, these experts recognize that eliminating these three components entirely from your diet is not practical because they are unavoidable in ordinary diets.