Are Walnuts High in Histamine?
| Histamine level | Moderate |
|---|---|
| Histamine liberator | Yes — triggers histamine release |
| Blocks DAO enzyme | No |
| Food category | 🥜 Nuts & Seeds |
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Walnuts & histamine FAQ
Are Walnuts high in histamine?
A histamine liberator — often poorly tolerated. Walnuts are classed as histamine liberators, which is why they show up on avoid lists even though nuts feel like a wholesome snack. They can trigger symptoms in sensitive people. If you want a crunchy fat source, a few macadamia nuts are often better tolerated, but introduce any nut cautiously and watch your response.
Can I eat Walnuts on a low-histamine diet?
Walnuts are generally best avoided on a strict low-histamine diet because they can be high in histamine and they act as a histamine liberator. Tolerance is individual, so track your own response before reintroducing them.
Last reviewed June 2026. Histamine ratings are based on the Swiss SIGHI food compatibility list and general low-histamine dietary guidance. Histamine tolerance is highly individual — this is general information, not medical advice. Track your own response and consult a healthcare professional about your diet.