(CNN) -- The Food and Drug Administration on Thursday took a step toward potentially eliminating trans fats from the food supply with a preliminary determination they are no longer "generally recognized as safe."
Trans fats are found in a variety of frozen, canned and baked processed foods. Partially hydrogenated oils are the major dietary source of trans fats in processed food. Trans fats have been linked to an increased risk of heart disease.
If the preliminary determination is finalized, according to the FDA, then partially hydrogenated oils will become food additives subject to premarket FDA approval. Foods with unapproved additives cannot legally be sold.