Soy products
Soy products appear on many histamine intolerance lists, and fermented soy products in particular tend to carry a significantly higher histamine load.
Soy's histamine relevance is something many people with intolerance report, though the picture varies a lot depending on how the soy has been processed.
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Commonly reported sensitivity — soy appears on a number of histamine intolerance and elimination lists, and many sensitive individuals report difficulty with it, even if the mechanism is not fully established
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Fermented soy is a bigger concern — soy sauce, tempeh, miso, and natto all carry fermentation-produced histamine on top of any sensitivity to soy itself, making them significantly higher-load than fresh tofu or plain edamame
If you react to processed soy products, fresher, less fermented forms like edamame or plain firm tofu may sit better.
Track your reactions to soy products in Histamine Tracker. Log meals and symptoms to spot the patterns that matter for your body.
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)
Histamine Tracker