Back to Lectin food checker
onion

onion

Vegetables

Is onion high in lectin?

Lectin status
Safe

See lectin status for onion alongside other trigger notes.

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

Triggers

Histamine
Safe
Histamine Liberators
Low
FODMAPs
Avoid
Fructans
Avoid
GOS
Safe
Fructose
Safe
Polyols
Safe
Gluten
Safe
Lactose
Safe
Dairy Proteins
Safe
Nightshades
Safe
Salicylates
Low
Oxalates
Safe
Nickel
Low
Sulfites
Safe
Nitrites
Safe
Glutamates
Low
Tyramine
Safe
Caffeine
Safe
Lectin
Safe
Low Fermentation
Avoid

Diets

Inflammation
✓ Fit
Vegan
✓ Fit
Vegetarian
✓ Fit
Paleo AIP
✓ Fit
Mediterranean
✓ Fit
DASH Diet
✓ Fit
EoE Compatible
✗ Avoid
FODMAPs
✗ Avoid
Low Fermentation
✗ Avoid
Priority ingredient notes

Serving size, prep, and portion notes for onion

Aromatic base that adds depth to soups, sauces, and sautes.

Typical serving

1/4 medium onion (about 50 g)

Best for

saute bases / soups / roasted trays

Prep notes

  • Sweat slowly to mellow the bite.
  • Slice thinly for quick pickles or salads.
  • Rinse raw slices for a lighter flavor.

Portion notes

  • A quarter onion is plenty for most pans.
  • Thin slices distribute flavor across bowls.
  • One tablespoon minced adds aroma without bulk.

Watch for

raw bite in salads / over-browning at high heat

Learn More

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

These foods have moderate levels and may be tolerated in small amounts:

These foods are high in lectin and may trigger symptoms:

View full list

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.

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