The Simplest Low FODMAP Swap Guide – Print It for Your Fridge

Quick Takeaways

• Most high FODMAP foods have easy low FODMAP alternatives
• Onion and garlic flavours can be achieved without the FODMAPs using infused oils or the green tops of spring onions
• Canned legumes, drained and rinsed well, are lower in FODMAPs than dried versions
• The low FODMAP diet is not a forever diet. It is a short-term elimination phase followed by reintroduction to find your personal tolerance levels
• Portion sizes matter. Even low FODMAP foods can become high FODMAP if you eat too much

The Simple Swap Table

| Instead of This | Use This Instead | |---|---| | Onions (brown, white, red) | Green tops of spring onions, fresh chives, fennel bulb, or a pinch of asafoetida powder | | Garlic | Garlic-infused olive oil (FODY Foods make a good one, or make your own by frying whole garlic in oil and removing it) | | Wheat pasta | Gluten-free pasta, rice noodles, soba noodles, or risotto rice | | Wheat bread | Gluten-free bread, or sourdough bread made with a long fermentation process | | Regular milk | Lactose-free milk, almond milk, rice milk, or hemp milk | | Honey or agave | Maple syrup or rice malt syrup | | Applesauce (in baking) | Mashed unripe banana, crushed pineapple, or pureed grapes | | Mushrooms | Tinned champignon mushrooms (drained and rinsed), fresh oyster mushrooms, or roasted eggplant | | Dried lentils or chickpeas | Canned lentils or chickpeas, drained and rinsed well (limit to ½ cup for lentils, ¼ cup for chickpeas per meal) | | Soy milk | Almond milk (bought, not homemade) | | Fizzy drinks and fruit juices | Water, peppermint tea, rooibos tea, or green tea |

How the Low FODMAP Diet Works

The low FODMAP diet is a therapeutic diet designed to help people with Irritable Bowel Syndrome (IBS) identify which foods trigger their symptoms. It should only be trialled after a diagnosis of IBS or under medical suggestion.

The Three Phases

1. Restriction Phase (4–6 weeks): You avoid all high FODMAP foods to give your gut a rest and reduce symptoms.
2. Reintroduction Phase: You systematically reintroduce individual FODMAP groups to find your personal tolerance levels.
3. Personalisation Phase: You create a modified diet that minimises symptoms while maximising dietary diversity.

What UK Research Shows

A UK study from six centres across the country found that 76% of patients were on the personalisation phase of the low FODMAP diet at long-term follow-up (an average of 3.7 years later), with 60% reporting adequate symptom relief.

Another UK service evaluation found significant improvements in symptoms including:

• Abdominal bloating: 72% at baseline, 48% at long-term follow-up
• Abdominal pain: 61% at baseline, 30% at long-term follow-up
• Flatulence: 71% at baseline, 40% at long-term follow-up

High adherence to the low FODMAP diet at long-term follow-up was associated with better symptom management.

Important Considerations

• ✅ The low FODMAP diet is NOT a gluten-free diet or a dairy-free diet. Wheat contains FODMAPs, but gluten itself is not the issue. Lactose is a FODMAP, but many dairy products like hard cheeses and butter are naturally low in lactose.
• ✅ Adherence to the reintroduction phase is crucial. One study found that completing FODMAP reintroduction as per dietetic education was associated with long-term symptom improvement.
• ✅ You should work with a FODMAP-trained dietitian. The diet can be complex, and professional guidance helps ensure it is done safely and effectively.

Disclaimer

This content is for educational and informational purposes only. It is not medical advice, diagnosis, or treatment. The low FODMAP diet should be followed under the guidance of a qualified healthcare professional, such as a registered dietitian. Individual tolerance to foods varies. Always consult your healthcare provider before making significant dietary changes.