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ketchup
Condiments & Sauces
Is ketchup high in lectin?
Is ketchup high or low in lectin? 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 lectin food checker matters
Lectins are proteins found in many plant foods, especially legumes and grains. Some people follow low-lectin diets believing they reduce inflammation and digestive issues, though properly cooked foods have reduced lectin content.
- Proper cooking destroys most lectins - never eat raw beans
- Pressure cooking is highly effective at reducing lectins
- Peeling and deseeding reduces lectin content
- Fermentation can reduce lectins in some foods
- Sprouting may increase or decrease lectins depending on the food
Sensitivities
What ketchup contains
FODMAPs
Histamine & Amines
Plant compounds
Irritants
Additives
Allergens
Diet fit
Where ketchup fits
Therapeutic diets
Lifestyle diets
Religious diets
What to know about ketchup
Ketchup is the textbook stacked trigger: no single ingredient in it is extreme, but it borders on a problem across an unusual number of them at once. It is made from concentrated tomatoes (nightshade plus histamine), cooked and aged (histamine and glutamate build up), sweetened with high-fructose syrup (excess fructose and FODMAPs) and often preserved with sulfites. Individually each is a moderate load; together, in the amount people actually use, they can push a sensitive person over the edge when a plain tomato would not. If you react to ketchup but tolerate fresh tomato, the processing is usually why.
Watch for
- Concentrated tomato makes it a nightshade and moderately high in histamine, two triggers in one spoonful
- Cooking and ageing raise free glutamate (a savoury, MSG-like load) and histamine beyond that of a fresh tomato
- Sweetened with high-fructose corn syrup, so it carries excess fructose and a moderate FODMAP load
- Often preserved with sulfites, a further additive trigger, and it is pro-inflammatory overall thanks to the sugar and processing
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Lectin Guide
Everything you need to know about lectin sensitivity and smart food choices.
Lectins are proteins found in many plant foods, especially legumes and grains. Some people follow low-lectin diets believing they reduce inflammation and digestive issues, though properly cooked foods have reduced lectin content.
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 Lectin sensitivity:
View all safe options
If you're sensitive to Lectin, consider these strategies:
- 1Proper cooking destroys most lectins - never eat raw beans
- 2Pressure cooking is highly effective at reducing lectins
- 3Peeling and deseeding reduces lectin content
- 4Fermentation can reduce lectins in some foods
- 5Sprouting may increase or decrease lectins depending on the food
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 ketchup high in Lectin?
Lectin: low signal for most people.
Can I still eat ketchup if I'm sensitive to Lectin?
Usually fine in normal portions.
What else should I check?
Check AIP, Reflux Diet, and Specific Carbohydrate next for a fuller picture.