Oyster mushroom
What the research shows
Unclear
the research on this page hasn’t settled it
What research says
Studies in people
-
Open question
Gut bacteria and blood sugar3
Oyster mushroom in a meal raised a gut hormone more in people whose gut bacteria were less varied.
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 79 products on Open Food Facts that list oyster mushroom.
- organic supergreens fruits & vegetables zena greens 4 additives
- MUSHROOM PAPPARDELLE M&S Food · 400 g 0 additives
- Medaglioni ai funghi Vemondo · 250 g 1 additive
- Mighty Mushroom Grains Jamie Oliver 1 additive
- Mushroom and chesnut Burger Waitrose · 227 g 1 additive
- Super Greens Country Farms · 10.6oz 2 additives
References
- 1oyster mushroom: ingredient taxonomy entry. Open Food Facts.
- 2Pleurotus ostreatus. Wikipedia. Accessed September 30, 2026. CC BY-SA 4.0.
- 3Klümpen L, Donkers A, Seel W, et al. GLP-1 Responses to a Single Meal Fortified With Oyster Mushroom Powder in Adults With Impaired Glucose Tolerance Depend on the Gut Microbiota Composition Before the Meal. Mol Nutr Food Res. 2025;69(20):e70159. doi:10.1002/mnfr.70159