The Food and Drug Administration has banned the use of red dye no. 3 from the nation's food supply, decades after it was banned in cosmetics due to cancer risk in rats. The dye, also known as erythrosine, must be removed from food manufacturing by 2027, and from pharmaceutical products by 2028. Dave and Amy discus why the FDA hasn't banned other carcinogens such as tobacco products, or other synthetic dyes, such as Red No. 40, from our food.