FODMAPs are short-chain carbohydrates poorly absorbed in the small intestine. In people with IBS they trigger bloating and pain; a structured low-FODMAP elimination relieves symptoms in roughly 70%.
What is FODMAPs?
FODMAPs is a Fermentable carbohydrate that plays a critical role in drawing water into the gut and fermenting in the colon. While many general diets overlook it, maintaining optimal levels of FODMAPs is frequently tracked by people working to optimize their IBS symptom severity.
Top Foods High in FODMAPs
A data-driven breakdown of the foods with the highest concentration of FODMAPs per 100 g.
| Food | FODMAPs |
|---|---|
| Garlic | 26 g |
| Apple | 6 g |
| Black Beans | 5 g |
| Pomegranate | 5 g |
| Kefir | 4 g |
| Whole Wheat Bread | 4 g |
| Lentils | 4 g |
| Chickpeas | 4 g |
| Cottage Cheese | 3 g |
| Banana | 3 g |
How FODMAPs Impacts IBS symptom severity
Research links diets rich in FODMAPs to changes in IBS symptom severity. Optimizing intake of these foods can support healthy IBS symptom severity levels via osmotic water movement plus rapid bacterial fermentation that produces gas.
How to Reduce FODMAPs
FODMAPs are a family of fermentable carbs; reduction is mostly about portion size and preparation, not heat.
| Method | Typical reduction | How it works |
|---|---|---|
| Low-FODMAP portions | dose-dependent | Most foods have a tolerated serving threshold (Monash University data). |
| Rinse canned legumes | lower | Rinsing sheds some GOS into the discarded liquid. |
| Lactose-free / aged dairy | lactose ↓ | Fermentation and lactase pre-digest the lactose fraction. |
Scientific references & clinical evidence
This guide is built on peer-reviewed research — verify the primary sources below.
Written by the Nutrition Encyclopedia team · medically reviewed by Dr. Sunaina Tariq, MBBS
Last updated 21 June 2026
How we source & verify data · Medical disclaimer
Nutrition values are approximations compiled from public food-composition databases (USDA FoodData Central) and are provided for educational purposes only — not medical advice.