Green bean
What the research shows
No concerns
none of the findings here link it to harm*
*Allergies present
Young, unripe bean pods eaten whole before the seeds inside mature.1
What research says
Studies in people
-
Benefit
Blood sugar in diabetes5
In people with poorly controlled diabetes, eating green beans daily lowered blood sugar and blood fats.
Allergies and intolerances
These are about people with an allergy, an intolerance or coeliac disease. The signal is about the ingredient itself, and these are about the person eating it, so the signal does not count them.
-
Legume protein reaction2
A protein called nsLTP in green beans is the main cause of allergic reactions in people allergic to them.
Single cases of misuse or overdose
One person or one incident, such as an accidental overdose or a mistake in a kitchen or factory. They are real, but a single case does not show what happens at normal amounts, so the signal does not count them.
-
Cooked vegetable allergy case3
A woman had a severe allergic reaction after eating cooked green beans, though she could still eat other legumes.
-
Skin turning yellow4
An 8-month-old baby's skin turned yellow from eating a lot of green bean baby food.
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 one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. 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.
Products
The 6 most-scanned of 2,867 products on Open Food Facts that list green bean.
- Thai Green Lentil Curry Merchant Gourmet 2 additives
- Haricots verts extra fins Freshona · 440 g 0 additives
- Green Beans in Tomato Sauce Eridanous Greek Style · 280 g 0 additives
- Super Nutty Wholefood Marks & Spencers · 230 g 0 additives
- Nutty Super Wholefood M&S Food · 285 g 0 additives
- Mixed Bean Salad in Vinaigrette Tesco · 400 g 0 additives
References
- 1Green bean. Wikipedia. Accessed September 29, 2026. CC BY-SA 4.0.
- 2Zoccatelli G, Pokoj S, Foetisch K, et al. Identification and characterization of the major allergen of green bean (Phaseolus vulgaris) as a non-specific lipid transfer protein (Pha v 3). Mol Immunol. 2010;47(7-8):1561-8. doi:10.1016/j.molimm.2010.01.009
- 3Rivero EM, Castaño MP, Romero IMD, Martínez MJM, Losa FP. Anaphylaxis due to green beans (Phaseolus vulgaris): a new phenotype? Allergol Immunopathol (Madr). 2025;53(1):8-11. doi:10.15586/aei.v53i1.1176
- 4Sale TA, Stratman E. Carotenemia associated with green bean ingestion. Pediatr Dermatol. 2004;21(6):657-9. doi:10.1111/j.0736-8046.2004.21609.x
- 5Tjokroprawiro A, Pikir BS, Budhiarta AA, et al. Metabolic effects of onion and green beans on diabetic patients. Tohoku J Exp Med. 1983;141 Suppl:671-6. doi:10.1620/tjem.141.suppl_671