Following the ban of red dye No. 3 in the United States, experts weigh in on the potential health risks of red dye No. 40, yellow No. 5 and others.

Red Dye No. 3, also known as erythrosine, is a synthetic food dye that gives foods and drinks a bright red color. It is also sometimes used in oral medicines and dietary supplements. It first was approved for use in food in 1907. It's made from petroleum.

The U.S. on Wednesday banned the use of a synthetic food dye that gives some candies, cakes and certain oral medications a cherry-red color, following evidence that the dye causes cancer in laboratory rats.