Food additives
Do food additives cause cancer?
Many substances are added to foods to preserve them and to enhance color, flavor, and texture. New additives must be cleared by the Food and Drug Administration (FDA) before entering the food supply. Rigorous testing in animals to look for any effects on cancer is done as part of this process. Additives are usually present in very small quantities in food, and no convincing evidence has shown that any additive at these levels causes human cancers.