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Trans fat

Nutrition Glossary


Updated February 02, 2014

Trans fat

Some margarine is made with partially hydrogenated oils and contain trans-fats.

Ronaldo Taveira

Definition: fat formed by partial hydrogenation of vegetable oil that has been shown to be bad for your health. Trans fats raise LDL cholesterol, which is a risk factor for cardiovascular disease.

Trans fats are found in shortening, hard stick margarine, cookies, crackers, and snack foods made with partially hydrogenated oil.

Most trans fats are man-made. However, a small amount of naturally occurring trans fat is found in animal products. Be sure to read the food labels when you shop because some foods that claim to be trans fat free but still contain partially hydrogenated oils. 

More About Trans-fats

Back to the Nutrition Glossary


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