Trans fatty acid

Trans fatty acid is the isomer of unsaturated fatty acids. The double bond is in trans configuration. Trans fatty acids result from the process of hydrogenating oils, which converts liquid fat to solid fat.

If you want to avoid eating trans fats, avoid consuming products prepared using hydrogenated vegetable oils like margarine. The most common foods that contain trans fats are commercially prepared baked foods (cookies, pies, donuts, etc.), snack foods, and processed foods, including fast foods.