Commonly used food dyes, such as Yellow 5, Red 40, and six others, are made from petroleum and pose a “rainbow of risks.” Those risks include hyperactivity in children, cancer (in animal studies), and allergic reactions. In 2008, because of the problem of hyperactivity, the Center for Science in the Public Interest petitioned the Food and Drug Administration to ban the use of these dyes. The British government and European Union have taken actions that are virtually ending the use of dyes throughout Europe.

Food dyes also serve to deceive consumers: they are often used to simulate the presence of healthful, colorful fruits and vegetables. But considering the adverse impact of these chemicals on children, and considering how easily they can be replaced with safe, natural ingredients, it's time to get rid of them altogether from the United States and Canada.

Kellogg's Nutri-Grain bars are made with natural colorings in Britain but contain food dyes in the United States.