E433 — Polysorbate 80
E433 (Polysorbate 80), a emulsifier, is rated "watch": fine in moderation. A synthetic emulsifier in ice cream, salad dressings, and pickles. Animal studies suggest gut microbiome disruption and low-grade inflammation.
What is Polysorbate 80?
A synthetic emulsifier made from sorbitol and oleic acid. Used in ice cream (to prevent ice crystals), salad dressings, pickles, and some vaccines and medications.
What does it do to the body?
Mouse studies have shown microbiome changes, low-grade inflammation, and metabolic effects from emulsifier doses comparable to processed-food levels. Human evidence is more limited but the pattern is reproducible enough to be worth watching, especially for people with inflammatory bowel disease.
What regulators say
EFSA confirmed the group acceptable daily intake at 25 mg per kg of body weight per day in 2015. The FDA approves it as GRAS for specific food uses.
Risk rating: Watch
Mixed evidence or a specific concern (gut, allergy, or contested safety data). Not alarming, but worth keeping an eye on rather than eating without limit.
Source: EFSA — re-evaluation of polysorbates (2015) ↗