Is soy protein high in histamine?

Histamine status

Low

Find out whether soy protein is high or low in histamine, see its exact rating, and check its FODMAP, salicylate, oxalate and diet compatibility all in one place.

Related checkers

Compare soy protein across criteria

Histamine LiberatorsModerate FODMAPsFit FructansSafe GOSSafe FructoseSafe PolyolsSafe

Sensitivity notes

Why histamine food checker matters

Histamine is a compound naturally present in many foods, especially aged, fermented, or preserved items. In sensitive individuals, excess histamine can cause headaches, flushing, hives, digestive issues, and other symptoms. Your body normally breaks down histamine, but some people have reduced capacity to do so.

Focus on fresh foods - histamine builds up as food ages
Cook and eat meals fresh; avoid leftovers sitting more than 24 hours
Be cautious with fermented foods, aged cheeses, and cured meats

Triggers

HistamineLow

Histamine LiberatorsModerate

FODMAPsSafe

FructansSafe

GOSSafe

FructoseSafe

PolyolsSafe

GlutenSafe

LactoseSafe

Dairy ProteinsSafe

NightshadesSafe

SalicylatesLow

OxalatesHigh

NickelHigh

SulfitesLow

NitritesSafe

GlutamatesModerate

TyramineSafe

CaffeineSafe

LectinHigh

Low FermentationSafe

Diets

GlutenFit

InflammationAvoid

VeganFit

VegetarianFit

Paleo AIPAvoid

MediterraneanAvoid

DASH DietAvoid

EoE CompatibleAvoid

FODMAPsFit

Low FermentationFit

Priority ingredient notes

Serving size, prep, and portion notes for soy protein

Soy protein is the rare soy food that grades clean on FODMAPs (A). Extraction strips the fermentable sugars that make whole soybeans a problem, so the isolate in a shake or a veggie burger behaves nothing like a bowl of edamame. What survives processing is everything else about soy. It is one of the big allergens and one of the six foods removed for EoE (E). It runs high on oxalate (D), roughly 40 to 60 mg per scoop, high on nickel (D), and it keeps soy’s reputation as a histamine liberator (C). A moderate free glutamate grade (C) and a low but real sulfite residue from processing (B) round out a profile that is friendlier to the gut than to the immune system.

Watch for

Soy is a declarable allergen and one of the six foods in an EoE elimination diet. The isolate is still soy in the way that matters immunologically. / High oxalate (D). Soy protein isolate carries far more oxalate than tofu or soy milk, and textured soy protein runs higher still, which matters for anyone managing kidney stones. / High nickel (D). Low nickel diet guidance names soy protein powder specifically, and it is one of the harder places to spot because powder hides in bars and meat alternatives. / A recognised histamine liberator (C), so it can prompt flushing or hives without containing much histamine itself. / Low FODMAP applies to the plain isolate. Flavoured powders and bars often add inulin or polyol sweeteners that put the FODMAPs straight back in.

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