Polysorbate 80
Last reviewed October 18, 2026 · Evidence strength: Limited · How we grade evidence
In plain words: Polysorbate 80 is an emulsifier that keeps oil and water mixed. In mice it changed gut bacteria and caused low-grade inflammation. Human research on it is thin, and a 2025 trial in people with Crohn's disease found no harm from emulsifiers. It's mostly in ice cream and pickled foods, so it's easy to cut back on.
Also listed on labels as: Polysorbate 80, Polyoxyethylene sorbitan monooleate, Tween 80, E433
What is it, and why is it in food?
Polysorbate 80 is a synthetic emulsifier. It keeps ice cream smooth, keeps oils evenly spread, and keeps pickle brines and some sauces clear. It's in ice cream, pickles and peppers, frosting and some vitamins and medicines.
What does the science say?
| The popular claim | "Emulsifiers damage the gut lining and microbiome." (Widely repeated; we couldn't find it in a specific expert's own words.) |
| Our verdict on that claim | Partly supported |
| Evidence strength | Limited: mostly mouse studies; little human research on polysorbate 80 itself. |
| Kinds of studies | Mouse studies, population studies of emulsifiers, trial in Crohn's disease |
- Mice: In the 2015 study, mice given polysorbate 80 or CMC developed gut bacteria changes, inflammation and metabolic syndrome.1
- People: The small human feeding trial tested CMC, not polysorbate 80.2 The large French population studies linked several emulsifiers to heart and diabetes risk.34
- Crohn's disease: The 2025 feeding trial found no difference between high- and low-emulsifier diets.5
What do regulators say?
- US and EU: permitted (E433). Our research didn't re-read the latest EU review of polysorbates.
Who should be careful?
- People with IBD or gut symptoms who want to experiment can limit emulsifiers including polysorbate 80.
- For most people, there's no need to worry about occasional amounts.
How common is it in US foods?
In our check of USDA's Branded Foods database, 6,974 of 438,129 US packaged foods with an ingredient list name polysorbate 80 (about 1.6%, or roughly 1 in 63).6 It shows up most often in: ice cream & frozen yogurt (2,970); pickles, olives, peppers & relishes (1,551); cakes, cupcakes, snack cakes (555); cheese (208); cream (204). Ice cream and pickled peppers and relishes account for most of it. These are label records companies sent to USDA, mostly in 2021 to 2023, so some products have changed since. Counts come from a text match of ingredient lists and are approximate.
Swaps and tips for families
- Choose ice creams with short ingredient lists.
- Many pickles and peppers come without it; compare labels.
Beyond the plate: related non-food exposures
Polysorbate 80 is common in medicines, vaccines, vitamins and cosmetics. In personal-care products, our scanner flags polysorbates and other ethoxylated ingredients as a possible source of 1,4-dioxane, a manufacturing contaminant.
Frequently asked questions
Is polysorbate 80 safe to eat?
It's approved in the US and EU. Mouse studies raised gut concerns, but human evidence is limited, and a trial in Crohn's patients found no harm from emulsifiers.
What foods have polysorbate 80?
Mostly ice cream and frozen desserts, pickles and peppers, and some frostings and snack cakes.
Is polysorbate 80 the same as polysorbate 20?
They're related emulsifiers made with different fats. Most gut research focused on polysorbate 80.
Related guides
- Carboxymethylcellulose (Cellulose Gum)
- Carrageenan
- Mono- and Diglycerides
- Emulsifiers and thickeners
Sources
Every source below was checked against PubMed, the publisher or the official page by our research team in October 2026.
- Dietary emulsifiers impact the mouse gut microbiota promoting colitis and metabolic syndrome. Nature, 2015. PubMed 25731162 · doi:10.1038/nature14232
- Randomized Controlled-Feeding Study of Dietary Emulsifier Carboxymethylcellulose Reveals Detrimental Impacts on the Gut Microbiota and Metabolome. Gastroenterology, 2022. PubMed 34774538 · doi:10.1053/j.gastro.2021.11.006
- Food additive emulsifiers and risk of cardiovascular disease in the NutriNet-Santé cohort. BMJ, 2023. PubMed 37673430 · doi:10.1136/bmj-2023-076058
- Food additive emulsifiers and the risk of type 2 diabetes: NutriNet-Santé. Lancet Diabetes Endocrinol, 2024. PubMed 38663950 · doi:10.1016/S2213-8587(24)00086-X
- Clinical Trial: The Effects of Emulsifiers in the Food Supply on Disease Activity in Crohn's Disease: An Exploratory Double-Blinded Randomised Feeding Trial. Aliment Pharmacol Ther, 2025. PubMed 39967287 · doi:10.1111/apt.70041
- FoodData Central, Branded Foods dataset (release 2026-04-30). U.S. Department of Agriculture, Agricultural Research Service, 2026. Link
This guide is for general education. It is not medical advice and does not replace advice from your doctor, pediatrician, allergist or registered dietitian. If you think you or your child reacted to a food, talk to a health professional. Research changes; we review these pages when new evidence or rules come out. Last reviewed October 18, 2026. Spotted an error? Email [email protected].