Over 35 years after the first study linking Red 3 to thyroid cancer in rats was published, the US is beginning to wean it out of foods and drugs.
Studies commissioned by the United Kingdom's Food Standards Agency have linked Red Dye No. 40 to hyperactivity in children.
After the recent ban on Red Dye 3, food manufacturers are turning to FDA-approved dyes like Red Dye 40. But is Red 40 safe?