Flaxseed oil
Flaxseed oil has no known histamine content, but its instability means it goes rancid quickly — which can cause its own discomfort.
From a histamine standpoint, flaxseed oil is low-risk — but it's one of the most fragile oils you'll come across.
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Very high in omega-3s — this makes flaxseed oil exceptionally prone to oxidation; once rancid, it tastes bitter and can cause digestive upset that has nothing to do with histamine
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Not for cooking — flaxseed oil breaks down rapidly with heat, so it's typically used cold, drizzled over food or added to smoothies, to preserve both its nutritional quality and palatability
Buying small bottles, keeping it refrigerated, and using it within a few weeks of opening makes a noticeable difference.
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For educational purposes only. Not medical advice. Consult a healthcare professional for personal guidance.
References
- SIGHI Food Compatibility List — SIGHI (2026)
- Histamine and histamine intolerance — Maintz & Novak (2007)
- Histamine Intolerance: The Current State of the Art — Comas-Basté et al. (2020)
- Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? — Sánchez-Pérez et al. (2021)
- Histamine Intolerance: Symptoms, Diagnosis, and Beyond — Jochum (2024)
- Guideline on management of suspected adverse reactions to ingested histamine — Reese et al. (2021)