Atlantic herring (kippered)
Kippered herring is smoked and cured, a combination that significantly raises histamine levels compared to fresh herring.
Kippering involves salt-curing and cold-smoking herring — both processes that allow histamine to accumulate over time.
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Curing and smoking — salt draws out moisture and slows spoilage, but the extended process gives bacteria time to produce histamine before the fish is ever eaten
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Compared to fresh herring — plain fresh herring is moderately lower in histamine; the kippering process is what pushes it into the high range
If you enjoy herring, fresh and simply prepared is worth trying as a starting point.
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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)