Can I Eat Onion with IBS?
Onion is THE highest fructan food and should be avoided by most people with IBS. Use the green part of spring onions as an alternative.
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Onion contains the highest concentration of fructans of any common food. It's the #1 bloating trigger.
Tip: Use only the green tops of spring onions, or try asafoetida powder (hing) for an onion-like flavor.
The fructans cause significant gas and discomfort regardless of your bathroom frequency.
Tip: Chives or the green part of leeks provide similar flavor without the FODMAP load.
Onion is one of the fastest-fermenting foods and commonly triggers urgency and loose stools.
Tip: Spring onion greens (cooked well) are your safest option.
Too unpredictable — onion can trigger symptoms in either direction.
Tip: Build flavor with herbs and the green parts of spring onions only.
One of the highest-risk foods for SIBO relapse. The fructans directly feed small intestinal bacteria.
Tip: Do not reintroduce until at least 6 weeks symptom-free.
A stress-sensitized gut reacts strongly to high-fructan foods like onion.
Tip: Focus on calming your nervous system first, then consider careful reintroduction.
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Start the Quiz →This information is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare provider before making changes to your diet, especially if you have a diagnosed medical condition. Individual responses to foods vary.