Did the EU ban titanium dioxide in food and should the US follow?
Yes. The EU banned E171 in 2022 over genotoxicity concerns. The US still allows it. Skip US-brand candies with the white coating.
What's actually in it
Titanium dioxide, listed as E171, is the bright white pigment in chewing gum coatings, white candy shells, frosting, and some pills. The European Union banned it in food in 2022 after EFSA reviewers said genotoxicity could not be ruled out. The US FDA still allows it. Many US candy and gum brands still ship the same product without E171 in the EU and with E171 in the US.
What the research says
A 2026 study in J Appl Microbiol ran E171 through a model of the human large intestine. The additive reshaped gut microbe activity and dropped butyrate. Butyrate feeds colon cells and calms inflammation. Less butyrate means more risk of colon disease. The EU based its ban on related lab and animal evidence.
Read labels for "titanium dioxide" or "E171." US candy makers like YumEarth, Smart Sweets, and Unreal have already pulled it. Pick uncoated gums, plain dark chocolate, and clear-coated pills. Compounding pharmacies can swap pill colorants if you ask.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Food additive titanium dioxide (E171) alters gut microbial metabolic activity and butyrate production | J Appl Microbiol | 2026 |
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