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The FDA banned Red 3 food coloring. A scientist explains the dye's history and health risks

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Red 3 also called FD&C Red No. 3 , erythrosine or E127 , has been widely used in food, cosmetics and pharmaceuticals since its FDA approval in 1969 .

Lorne Hofseth says mounting scientific evidence suggests that consuming Red 3 poses significant health risks.

He says Red 3 disrupts thyroid hormone regulation through several mechanisms, and may promote thyroid tumor formation.

Hofseths: Stricter regulations reflect growing concerns over the negative physiological effects of Red 3 .

Consumers can protect themselves from Red 3 exposure by reading ingredient labels for “ FD&C Red No. 3 ” or “ E127 ” and choosing products that use natural dyes.

Preparing homemade foods with natural color alternatives like beet juice or turmeric is another option.

Ongoing research and policy reforms could help ensure that food additives like Red 3 no longer put consumer health at risk.