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Tuna
Thunnus
High Protein
Low FODMAP
Omega-3 Rich
Fresh tuna fillet

FODMAP/SIBO Rating

Safe

Serving Size Consideration: A typical serving of tuna is about 85-100g, roughly the size of a deck of cards

Safe Serving Size: Tuna is generally safe in portions up to 150g for most people following a low FODMAP diet

Active Compounds: Tuna contains no FODMAPs as it is a protein-rich fish with no carbohydrate content

Fermentation Level:
Very Low

Digestive Impact

Why it's problematic: No

Specific symptoms: Tuna is generally well-tolerated and does not trigger IBS symptoms

Typical reaction time frame: Immediate to 2 hours

Individual variation: Some individuals may have fish allergies unrelated to FODMAPs

Safe Alternatives

salmon

Salmon

mackerel

Mackerel

cod

Cod

Substitution ratio: 1:1

Processing Effects

Canned tuna remains low FODMAP, but check for added ingredients

Cooking method doesn't affect FODMAP content

Stacking Considerations

Avoid combining with:

  • garlic
  • onion

Safe complementary foods: Can be safely combined with rice, cucumber, and lettuce

Reintroduction Guidelines
  1. Tuna doesn't require reintroduction as it's naturally low FODMAP
  2. Focus on portion size tolerance if new to eating fish

Signs of success: No digestive discomfort after consumption

Hidden Sources

Common products containing garlic:

  • tuna salad
  • sushi rolls
  • tuna casserole
  • tuna melts

Alternative names: skipjack, yellowfin, albacore, bluefin

Individual Variables

Factors affecting tolerance:

  • Overall fish tolerance
  • Portion size
  • Preparation method
  • Added ingredients

Tip: Start with plain, unseasoned tuna to assess individual tolerance