Additive guide
Is Titanium Dioxide bad? What the science actually says
By the HealthierCart team ·
What is Titanium Dioxide?
Titanium dioxide is a bright-white mineral pigment used to make foods and coatings look whiter and more opaque. As a food additive (E171) it is decorative — it adds whiteness, not nutrition or flavor.
| Also known as | TiO2, E171, CI 77891 |
|---|---|
| E-number | E171 |
| U.S. status | FDA-permitted in the U.S. (see notes) |
| EU status | Banned as a food additive in the EUBanned as a food additive in the EU since 2022 (Commission Regulation EU 2022/63). |
| HealthierCart view | Best avoided |
| Commonly found in | Candy coatings and chewing gum, white frostings and icing, powdered doughnuts, coffee creamers, some sauces, and pill coatings. |
So, is Titanium Dioxide bad for you?
This is the one seed additive where regulators genuinely diverge. The EU banned it from food in 2022 because EFSA could not rule out genotoxicity from nanoscale particles; the U.S. FDA still permits it. Given a credible authority declined to affirm its safety, limiting it is the cautious, evidence-consistent choice.
What regulators actually say
EFSA's re-evaluation (EFSA Journal 2021;19(5):6585, published May 6, 2021) concluded titanium dioxide (E171) can no longer be considered safe as a food additive because a concern for genotoxicity could not be ruled out. The EU responded with Commission Regulation 2022/63 (adopted January 14, 2022), banning it in food fully from August 7, 2022. The U.S. FDA continues to permit it as a color additive at up to 1% of the food's weight (21 CFR 73.575).
Where you'll find it
Candy coatings and chewing gum, white frostings and icing, powdered doughnuts, coffee creamers, some sauces, and pill coatings.
Titanium Dioxide: frequently asked questions
- Why did the EU ban titanium dioxide but the U.S. didn't?
- EFSA's 2021 review found food-grade E171 can contain a large fraction of nanoscale particles (under 100 nm) and could not rule out that they are genotoxic (damage DNA), so the EU banned it in food from August 2022 on a precautionary basis (Regulation 2022/63). The FDA has not reached the same conclusion and still allows it at up to 1% of a food's weight under 21 CFR 73.575.
- Is titanium dioxide in food dangerous?
- There is no proof of harm at food levels, but EFSA declined to affirm its safety in 2021 — which is different from proving it is safe. Its concern centered on nanoscale particles that can accumulate in the body and possible genotoxicity. That regulatory uncertainty is why many shoppers choose to avoid it.
- How do I know if a product contains titanium dioxide?
- Look for 'titanium dioxide' or 'E171' in the ingredient list, usually in very white or coated products. Scanning the barcode in HealthierCart flags it and cites the EFSA position.