Back to Polyols food checker
tuna
Seafood
Is tuna high in polyols?
Is tuna high or low in polyols? See its exact rating, how much counts as a portion, and its FODMAP, salicylate, oxalate and diet compatibility 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
- Avocado portion size matters - small amounts may be fine
- Cauliflower and mushrooms are common triggers
Sensitivities
What tuna contains
FODMAPs
Histamine & Amines
Plant compounds
Irritants
Additives
Allergens
Diet fit
Where tuna fits
Therapeutic diets
Lifestyle diets
Religious diets
What to know about tuna
Tuna is the textbook scombroid fish. Its flesh is naturally packed with histidine, and when tuna is left out of the cold chain, bacteria convert that histidine into large amounts of histamine. The result is scombroid poisoning, or an easy trigger for anyone with histamine intolerance. The catch is that this histamine is heat-stable: it survives cooking, canning and freezing, so it is graded high in histamine here even though the fish is otherwise clean and strongly anti-inflammatory.
Watch for
- High in histamine and the classic scombroid fish, so poorly chilled fresh tuna and older canned or opened tuna are frequent triggers for flushing, headache and hives
- The histamine is heat-stable, meaning cooking, canning or freezing does not remove it once it has formed
- Freshness and handling matter more than fresh versus canned: cold-chain-broken tuna of any form is the problem
- Moderate salicylate and oxalate, minor secondary considerations only
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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 tuna high in Polyols?
Polyols: low signal for most people.
Can I still eat tuna if I'm sensitive to Polyols?
Usually fine in normal portions.
What else should I check?
Check Fish, Vegan, and Vegetarian next for a fuller picture.