crab
Seafood
Is crab high in polyols?
Find out whether crab is high or low in polyols, see its exact rating, and check its FODMAP, salicylate, oxalate and diet compatibility all in one place.
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Sensitivity notes
Why polyols food checker matters
Polyols (sugar alcohols) are found naturally in some fruits and vegetables, and are used as artificial sweeteners. They're poorly absorbed and can cause digestive symptoms, especially in IBS sufferers.
- Avoid sugar-free products with sorbitol, mannitol, xylitol, maltitol
- Stone fruits are naturally high in polyols
- Cooking doesn't reduce polyol content
Triggers
Diets
Serving size, prep, and portion notes for crab
Crab is a crustacean, the same allergen family as shrimp, prawn and lobster, and crustacean allergy tends to be strong, lifelong and shared across the group. Away from allergy the profile is mild: no gluten, no glutamates, no tyramine, no nitrites, and unlike prawn it grades clean on sulfites, since the sulfite dips used to stop black spot are a shrimp and lobster practice rather than a crab one. What does need attention is moderate histamine, moderate nickel, the cadmium in the brown meat, and the fact that a lot of what is sold as crab is not crab at all.
Watch for
Moderate histamine (C). Picked crab meat is one of the more perishable seafoods, and the amine load of a crab cake depends on how long the meat sat before it was mixed and how long the cake sat after / Imitation crab is a different food. Surimi sticks are usually pollock or another white fish rebuilt with starch, sugar and egg white, and the starch is often wheat, so a gluten free or fish avoiding reader can be caught by a product real crab would never have flagged / Moderate nickel (C), a shared trait across shellfish and worth tracking if nickel is one of your suspects / The brown meat inside the shell concentrates cadmium far more than the white claw and leg meat, which is why UK guidance is to keep brown crab meat occasional while placing no limit on white meat
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Polyols Guide
Everything you need to know about polyols sensitivity and smart food choices.
Polyols (sugar alcohols) are found naturally in some fruits and vegetables, and are used as artificial sweeteners. They're poorly absorbed and can cause digestive symptoms, especially in IBS sufferers.
Sensitivity varies widely. What triggers one person may be fine for another. Track your reactions to find your personal threshold.
These foods are generally well-tolerated for Polyols sensitivity:
View all safe options
These foods have moderate levels and may be tolerated in small amounts:
These foods are high in polyols and may trigger symptoms:
View full list
If you're sensitive to Polyols, consider these strategies:
- 1Avoid sugar-free products with sorbitol, mannitol, xylitol, maltitol
- 2Stone fruits are naturally high in polyols
- 3Cooking doesn't reduce polyol content
- 4Avocado portion size matters - small amounts may be fine
- 5Cauliflower and mushrooms are common triggers
Pro tip: Keep a food diary to track your reactions. The Triggerbites app makes this easy with automatic pattern detection.
Want personalized tracking?
Download Triggerbites to log meals, track symptoms, and discover your unique triggers.
Get the AppFAQ
Is crab high in Polyols?
Polyols: low signal for most people.
Can I still eat crab if I'm sensitive to Polyols?
Usually fine in normal portions.
What else should I check?
Check Vegan, Vegetarian, and EoE Compatible next for a fuller picture.