Conjugated Linoleic Acid (CLA) is a natural weight loss aid that helps promote an optimal body composition.* More specifically, it is the most common omega-6 fatty acid, found in large amounts of vegetable oils but also in various other foods in smaller amounts. CLA is essentially a type of polyunsaturated, omega-6 fatty acid. In other words, it’s technically trans fat, but a natural type of trans fat that occurs in many healthy foods.