Silicon dioxide

Studies in people

• Open question

  Particles in body organs¹

  Silicon dioxide particles were found in liver, spleen, kidney and gut tissue of 15 deceased people.

Study type not stated

• No harm found

  Food additive exposure risk²

  Scientists say silicon dioxide in food does not raise a safety concern for infants under 16 weeks at current levels.

• Open question

  Gut immune system³

  Scientists do not yet know whether silicon dioxide particles in food affect the gut's immune cells.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.