Are mussels high in histamine?
Mussels cooked fresh are low in histamine on the measurements we have: no histamine was found in seafood samples. The sample was small, though, and some low-histamine diets exclude shellfish.
- Histamine
- Not detected
- Other amines
- Low
- Liberator
- Claimed, unproven
- DAO blocker
- No evidence
Why sources disagree. Seafood had no detectable histamine in lab tests, but only seven samples were measured, and some published diets and a 2024 clinical review exclude shellfish or seafood.
What each source says
| Source | Verdict | What it says, in our words |
|---|---|---|
| Lab measurements, Spain 1 | Measured | No detectable histamine in 7 seafood samples; other amines low. Mussels were not reported separately. |
| 10 published low-histamine diets 1 | 3 of 10 exclude seafood. | |
| Histamine intolerance review, 2020 2 | 20–60% of the low-histamine diets it compared exclude shellfish. | |
| Clinical review, 2024 3 | Lists seafood among foods a low-histamine diet avoids. | |
| Histamine-liberator claim 1 | Seafood is listed among suggested histamine-releasing foods; no human study supports the claim. | |
| SIGHI food list 4 | See source | See SIGHI's own list for its rating. |
Measured histamine
| Food tested | Samples | Histamine | Other amines |
|---|---|---|---|
| Seafood sold in Spain (shellfish group; species not given) 1 (Table 1) | 7 | not detected | putrescine mean 3.02 mg/kg (1.44–9.79); tyramine mean 0.15 mg/kg; cadaverine not detected |
mg/kg = milligrams of histamine per kilogram of food. "Not detected" means below the laboratory's detection limit.
How freshness and processing change it
Buy mussels live from a seller with a quick turnover, cook them the day you buy them and eat them straight away. Ready-cooked, vacuum-packed, jarred and canned mussels were not measured, and leftovers have had time for amines to form; reheating does not remove them.
Seafood (group) had no detectable histamine in 7 samples. (measured)
Not measured; you do not know how long they were kept chilled. (estimate)
Not measured; processed and stored for longer, and canning heat does not remove histamine. (estimate)
Not measured. Storage time adds histamine, and reheating does not remove it. (estimate)
Why we rate mussels 0
Mussels are usually bought live, cooked in a few minutes and eaten straight from the pot, which is close to the best case for histamine. Histamine in seafood is made by bacteria from histidine while the food is stored, and a mussel cooked the day it was bought has had little storage.
The measurement is reassuring but thin. In the University of Barcelona team's survey of foods sold in Spain, seafood, reported as one shellfish group, had no detectable histamine in any of the seven samples. Putrescine averaged 3.02 mg/kg, tyramine 0.15 mg/kg, and cadaverine was not found. The paper does not list the species, so we cannot say whether mussels were among the seven. Seven samples cannot rule out an occasional high one: the same team's fresh white fish had no histamine in 95% of samples, but one had 36.55 mg/kg.
The published diets are split. Three of the ten low-histamine diets in a 2021 review exclude seafood, and a 2020 review found that 20–60% of the diets it compared exclude shellfish. A 2024 clinical review lists seafood first among the foods a low-histamine diet avoids. Seafood also appears on lists of supposed "histamine liberators", foods said to release the body's own histamine; the 2021 review notes that no human study supports that idea. We mark mussels disputed for these reasons.
We rate fresh mussels 0, "low", because that is what was measured. The rating applies to live mussels cooked the day you buy them. Ready-cooked mussels in vacuum packs have a storage history you cannot see, and we rate them 1 as an estimate. Jarred, pickled and canned mussels have been processed and stored for longer, and canning heat does not remove histamine that formed before, so we rate them 2. Leftover cooked mussels are also a 2, because histamine forms during storage and reheating does not remove it. Shellfish allergy is a different condition from histamine intolerance, and this rating says nothing about it.
Questions about mussels and histamine
Are ready-cooked mussels low histamine?
They were not measured. We rate vacuum-packed cooked mussels 1 and jarred or canned mussels 2 as estimates, because you cannot see how long they were stored, and histamine that formed before packing survives the heat. Live mussels cooked the day you buy them match the seafood samples that had no histamine.
Do mussels release histamine in the body?
Seafood is on lists of foods said to release the body's own histamine, but a 2021 review found no human study supporting the claim. Reactions to shellfish can also be an allergy, which is a different condition.
Evidence behind this page
- Seven seafood samples sold in Spain had no detectable histamine; putrescine averaged 3.02 mg/kg, tyramine 0.15 mg/kg, and cadaverine was not detected. 1
- Three of ten published low-histamine diets exclude seafood, and 20–60% of the diets compared in a 2020 review exclude shellfish. 12
- A 2024 clinical review lists seafood among foods to avoid on a low-histamine diet. 3
- Seafood is listed among foods said to release the body's own histamine, but no human study supports the claim. 1
- Fresh white fish had no detectable histamine in 95% of 31 samples, but one sample had 36.55 mg/kg. 1
Sources
- Sánchez-Pérez S, Comas-Basté O, Veciana-Nogués MT, Latorre-Moratalla ML, Vidal-Carou MC. Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? Nutrients 13(5):1395, 2021. doi:10.3390/nu13051395 (Sánchez-Pérez S et al. 2021)
- Comas-Basté O, Sánchez-Pérez S, Veciana-Nogués MT, Latorre-Moratalla M, Vidal-Carou MDC. Histamine Intolerance: The Current State of the Art. Biomolecules 10(8):1181, 2020. doi:10.3390/biom10081181 (Comas-Basté O et al. 2020)
- Jochum C. Histamine Intolerance: Symptoms, Diagnosis, and Beyond. Nutrients 16(8):1219, 2024. doi:10.3390/nu16081219 (Jochum C 2024)
- Swiss Interest Group Histamine Intolerance (SIGHI). Food compatibility list for histamine intolerance. histaminintoleranz.ch (accessed November 2026), 2026. Link (Swiss Interest Group Histamine Intolerance (SIGHI) 2026)