Can nanoparticles from food packaging and additives accumulate in your organs?

What's actually in it

Nanoparticles are extremely tiny particles found in food from several sources. Titanium dioxide (E171) nanoparticles are used as a whitener in candy and frosting. Silicon dioxide is added as an anti-caking agent to powdered foods. Nano-sized particles also break off from food packaging and processing equipment. Their small size lets them pass through your gut lining and enter your bloodstream.

What the research says

A 2026 review in Sci Total Environ assessed the health risks of nanoparticles consumed through food. The review found that nanoparticles from food additives and packaging can accumulate in the liver, spleen, kidneys, and gut. Once there, they can trigger inflammation, oxidative stress, and cell damage.

Because nanoparticles are so small (under 100 nanometers), they can enter cells in ways that larger particles cannot. Long-term daily exposure through food creates a slow buildup that current safety testing doesn't fully account for.

Limit foods with titanium dioxide (E171) and silicon dioxide. Avoid processed foods with bright white coatings. Choose whole, unpackaged foods when possible, and store food in glass instead of plastic.