What is the low-FODMAP diet for?

It's an evidence-based dietary therapy for irritable bowel syndrome (IBS), developed at Monash University. Roughly 70% of people with IBS get meaningful symptom relief from a properly run low-FODMAP diet. It works by temporarily removing fermentable carbohydrates that trigger gas, bloating, and pain in sensitive guts, then systematically testing them back in. It is not a weight-loss diet and not meant to be permanent.

What foods are low-FODMAP?

In normal portions: meat, fish, eggs, firm tofu, hard cheeses, lactose-free dairy, rice, oats, quinoa, gluten-free pasta, and many vegetables and fruits in measured amounts, carrots, zucchini, spinach, bell peppers, potatoes, strawberries, oranges, kiwi. Portion size matters enormously here; a low-FODMAP food can become high-FODMAP in a large serving. Our low fodmap food list gives the thresholds.

Why are onion and garlic such a problem?

They're high in fructans, a FODMAP that almost no one absorbs well, and they're in nearly everything, stocks, sauces, spice blends. The good news: the troublesome FODMAPs are water-soluble, not oil-soluble, so garlic-infused oil delivers the flavor without the fructans. The green tops of spring onions and chives are also low-FODMAP. That's how our low-FODMAP pasta keeps its flavor.

How long should I stay on the elimination phase?

Two to six weeks, no longer. The elimination phase is diagnostic, not therapeutic in the long run. Staying on it indefinitely needlessly restricts your diet and can reduce the diversity of your gut microbiome. Once symptoms settle, you move into structured reintroduction to find your personal triggers, ideally with a registered dietitian guiding the process.

Is low-FODMAP the same as gluten-free?

No, though they overlap because wheat is both a gluten source and high in fructans. Low-FODMAP targets a broad group of fermentable carbs (including onion, garlic, certain fruits, and dairy sugars), not the gluten protein. Many gluten-free products are still high-FODMAP, and many low-FODMAP foods contain gluten. They're different problems with a partial overlap.

The Guide· Diet-Specific

Low-FODMAP recipes

By The ThatCleanChef Kitchen · Updated June 28, 2026 · 14 min read

Low-FODMAPGluten-FreeIBS-Friendly

Low-FODMAP is a three-phase elimination protocol for IBS, developed at Monash University, not a lifestyle diet. Here's what FODMAPs are, the three phases, the foods that are safe in normal portions, and the chef-tested recipes that don't taste like restriction. Start with the low-FODMAP pasta; the low fodmap food list is the reference you'll keep open while you shop.

We'd rather answer the question you actually asked in the first paragraph, then earn your trust by showing the chef notes.

ThatCleanChef Kitchen

The FAQ

The questions cooks bring us.

What is the low-FODMAP diet for?: It's an evidence-based dietary therapy for irritable bowel syndrome (IBS), developed at Monash University. Roughly 70% of people with IBS get meaningful symptom relief from a properly run low-FODMAP diet. It works by temporarily removing fermentable carbohydrates that trigger gas, bloating, and pain in sensitive guts, then systematically testing them back in. It is not a weight-loss diet and not meant to be permanent.
What foods are low-FODMAP?: In normal portions: meat, fish, eggs, firm tofu, hard cheeses, lactose-free dairy, rice, oats, quinoa, gluten-free pasta, and many vegetables and fruits in measured amounts, carrots, zucchini, spinach, bell peppers, potatoes, strawberries, oranges, kiwi. Portion size matters enormously here; a low-FODMAP food can become high-FODMAP in a large serving. Our low fodmap food list gives the thresholds.
Why are onion and garlic such a problem?: They're high in fructans, a FODMAP that almost no one absorbs well, and they're in nearly everything, stocks, sauces, spice blends. The good news: the troublesome FODMAPs are water-soluble, not oil-soluble, so garlic-infused oil delivers the flavor without the fructans. The green tops of spring onions and chives are also low-FODMAP. That's how our low-FODMAP pasta keeps its flavor.
How long should I stay on the elimination phase?: Two to six weeks, no longer. The elimination phase is diagnostic, not therapeutic in the long run. Staying on it indefinitely needlessly restricts your diet and can reduce the diversity of your gut microbiome. Once symptoms settle, you move into structured reintroduction to find your personal triggers, ideally with a registered dietitian guiding the process.
Is low-FODMAP the same as gluten-free?: No, though they overlap because wheat is both a gluten source and high in fructans. Low-FODMAP targets a broad group of fermentable carbs (including onion, garlic, certain fruits, and dairy sugars), not the gluten protein. Many gluten-free products are still high-FODMAP, and many low-FODMAP foods contain gluten. They're different problems with a partial overlap.

Sources & technique

Where the technique comes from

The kitchen

About the ThatCleanChef Kitchen

A small team of recipe developers and food photographers testing recipes in home kitchens on home equipment. Every Nutrition Ledger is USDA FoodData Central-sourced and reviewed by Lena Marsh, RDN, MS. We don't pretend to be a single chef, we're the people behind the plates. Meet the full team →

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