Onion: very high risk for fodmap. The number one FODMAP trigger food, very high in fructans at any serving size.

vegetable

Onion Intolerance Check

Full breakdown across 16 food intolerance detectors.

Known trigger for some intolerances

Flagged Intolerances

FODMAP Very High

The number one FODMAP trigger food, very high in fructans at any serving size.

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This information is for educational purposes only and does not constitute medical advice. Food reactions are individual — what triggers symptoms for one person may be fine for another. Always consult a healthcare professional before making dietary changes.