A simple introduction to the five groups of fermentable carbohydrates that can trigger IBS symptoms.
The basics
FODMAP stands for Fermentable Oligosaccharides, Disaccharides, Monosaccharides And Polyols. These are short-chain carbohydrates that some people struggle to digest.
When FODMAPs reach your large intestine undigested, gut bacteria ferment them. This process produces gas and draws water into your bowel. For people with IBS, this can trigger bloating, cramps, diarrhea, or constipation.
Not everyone reacts to all FODMAPs. That's why the low-FODMAP protocol helps you identify your personal triggers.
3 more sections in the app
Keep reading in the Phase app
The rest of this guide — plus the full Learn library, matched to where you are in the protocol — lives inside Phase.
