Histamine Tracker
Cheddar (aged)
Aged cheddar is one of the most reliably high-histamine cheeses — the longer it ages, the more histamine accumulates.
Histamine in cheese builds up through aging, and cheddar is often aged for months or even years.
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Aging time — bacteria in the cheese convert the amino acid histidine into histamine over the aging period; the sharper and older the cheddar, the higher the levels tend to be
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Mild vs. aged — mild cheddar aged only a few weeks is typically much lower in histamine than an extra-sharp vintage variety
If cheddar is hard to give up, a mild, young cheddar is usually the more manageable choice.
Track your reactions to cheddar (aged) 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)