Is titanium dioxide in candy and chewing gum safe for kids?

What's actually in it

Titanium dioxide (TiO2) is a white pigment used to make foods look brighter. You'll find it in candy coatings, chewing gum, frosting, coffee creamers, and some powdered donuts. On ingredient labels, it shows up as E171 or simply "titanium dioxide." It doesn't add flavor. Its only job is to make things look white and shiny.

The particles are tiny. Some fall into the nanoparticle range, meaning they're small enough to pass through the lining of your gut and into your bloodstream.

What the research says

A 2026 systematic review in Particle and Fibre Toxicology pulled together data from dozens of animal studies on what happens when titanium dioxide is eaten over time. The findings aren't reassuring.

Titanium dioxide accumulates in organs. After repeated oral exposure, researchers found it building up in the liver, spleen, kidneys, and gut. The longer the exposure, the more it piled up. Your body doesn't break it down or flush it out easily.

Even short-term exposure led to measurable accumulation in some organs. With chronic exposure (the kind you'd get from eating these foods regularly for months or years), the levels were much higher.

The European Union banned titanium dioxide as a food additive in 2022 after their food safety authority concluded it could damage DNA. The U.S. still allows it.

Kids are at higher risk because they eat more candy and sweets relative to their body weight. A child eating a handful of coated candies every day is getting a steady dose of particles that their body can't clear.

Check labels on candy, gum, and frosted baked goods. If you see titanium dioxide or E171, skip it. Plenty of brands now use natural colorings instead.