
tomato
Vegetables
Is tomato high in gos?
Find out whether tomato is high or low in gos, see its exact rating, and check its FODMAP, salicylate, oxalate and diet compatibility all in one place.
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Sensitivity notes
Why gos food checker matters
Galacto-oligosaccharides (GOS) are carbohydrates found mainly in legumes and some vegetables. They're a FODMAP that can ferment in the gut, causing bloating and discomfort in sensitive people.
- Canned and rinsed legumes are lower in GOS than dried
- Start with smaller portions and build up tolerance
- Some people find beano-type enzymes helpful
Triggers
Diets
Serving size, prep, and portion notes for tomato
Tomato is flagged on more independent axes than almost any other everyday vegetable, and the mechanisms are constantly mistaken for each other. It is a nightshade, our highest grade there, carrying the glycoalkaloids that concentrate in unripe green fruit, stems and leaves. Separately it is one of the richest natural sources of free glutamate, which is exactly why it tastes savoury and why it turns up in MSG-sensitivity reports. Separately again it grades high for histamine and high as a histamine liberator, and high for salicylates, with moderate oxalate and high lectin content in the seeds and skin. What it is not is a FODMAP problem: it rates only moderate there and clean on fructans, lactose, gluten, nickel and sulfites. And despite the nightshade reputation, tomato grades strongly anti-inflammatory, so nightshade avoidance is an individual sensitivity question rather than a general claim that tomato is inflammatory.
Watch for
A nightshade at our highest grade, and not compliant with autoimmune protocol. The glycoalkaloids concentrate in unripe green fruit, stems and leaves, so under-ripe tomatoes carry more than fully red ones / One of the highest natural free-glutamate foods there is. Reducing tomato into paste, passata or sun-dried pieces concentrates it further, which is why a rich sauce reads far more umami and MSG-like than a fresh slice / High for histamine and a strong liberator on top of that. Cooked, tinned and jarred tomato products grade worse than fresh fruit, with tomato sauce reaching our top histamine grade / High in salicylates, moderate in oxalate and high in lectins. The lectins sit in the seeds and skin, so deseeding and peeling reduce the load without removing it / Only moderate on FODMAPs and clean on fructans, gluten, lactose, nickel and sulfites, so if tomato reliably bothers you the cause is nearly always one of the nightshade, histamine, glutamate or salicylate routes rather than fermentation / Rates strongly anti-inflammatory in its own right, largely from lycopene, so a nightshade reaction is a personal sensitivity rather than evidence that tomato is an inflammatory food
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GOS Guide
Everything you need to know about gos sensitivity and smart food choices.
Galacto-oligosaccharides (GOS) are carbohydrates found mainly in legumes and some vegetables. They're a FODMAP that can ferment in the gut, causing bloating and discomfort in sensitive people.
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 GOS sensitivity:
View all safe optionsThese foods have moderate levels and may be tolerated in small amounts:
These foods are high in gos and may trigger symptoms:
View full listIf you're sensitive to GOS, consider these strategies:
- 1Canned and rinsed legumes are lower in GOS than dried
- 2Start with smaller portions and build up tolerance
- 3Some people find beano-type enzymes helpful
- 4Firm tofu is lower in GOS than silken tofu
- 5Sprouted legumes may be better tolerated
Pro tip: Keep a food diary to track your reactions. The Triggerbites app makes this easy with automatic pattern detection.
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Get the AppFAQ
Is tomato high in GOS?
GOS: low signal for most people.
Can I still eat tomato if I'm sensitive to GOS?
Usually fine in normal portions.
What else should I check?
Check Nightshades, Glutamates, and Lectin next for a fuller picture.





