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Are Mushrooms Low FODMAP?

Updated · Vegetables
High FODMAP

Most common mushrooms, such as button and portobello, are high in FODMAPs because of mannitol.

Main FODMAPs: Mannitol

Why

Mannitol is a polyol that your small intestine absorbs poorly. Common button (white), cremini, and portobello mushrooms contain it, which is why they can cause symptoms even in small amounts for some people. Some other types, such as oyster mushrooms, are generally reported to be better tolerated.

Good to know

  • Mushroom powders and extracts in soups, gravies, and supplements can contain the same compounds.
  • FODMAP content varies a lot by mushroom type, so check a current database for the one you eat.

Low FODMAP swaps

  • Zucchini or eggplant in small servings, checked in an app
  • Bell peppers
  • Spinach or other leafy greens for earthy bulk in a dish

Related foods

Related reading

Good to know: FODMAP content varies with variety, ripeness, preparation, brand, and serving size, and everyone's tolerance is different. This page gives general guidance without exact serving thresholds. For tested serving sizes, check the Monash University FODMAP Diet app and talk to your dietitian.

Not medical advice. This article is for general education only and does not replace guidance from your doctor or a registered dietitian. The low FODMAP diet is meant to be done in phases, ideally with a dietitian who is trained in it. See a doctor first if you have new, severe, or worsening digestive symptoms.

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