Ancient peoples used coloring from paprika, turmeric, saffron, iron, lead oxides and other sources in food, drugs, cosmetics ...

(Gene J. Puskar / AP) The U.S. Food and Drug Administration banned the dye known as Red 3 from the nation’s food supply in January, setting deadlines for stripping the brightly hued additive ...

Food Dyes Food dyes can generally change the color ... Your stool may become greenish or even orange as a result. 5. Iron Supplements Iron supplements are notoriously difficult on the stomach.