leek
Vegetables
Is leek high in dairy proteins?
Is leek high or low in dairy proteins? 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 dairy proteins food checker matters
Dairy proteins (casein and whey) can cause reactions in people with milk protein allergy or intolerance. This is different from lactose intolerance and can cause both digestive and systemic symptoms.
- Dairy protein allergy requires complete dairy avoidance
- Casein and whey are the main proteins to avoid
- 'Non-dairy' products may still contain casein
- Ghee may be tolerated as proteins are removed
- This is different from lactose intolerance - treatment differs
Sensitivities
What leek contains
FODMAPs
Histamine & Amines
Plant compounds
Irritants
Additives
Allergens
Diet fit
Where leek fits
Therapeutic diets
Lifestyle diets
Religious diets
What to know about leek
Leeks are a high-FODMAP allium: the white base is loaded with fructans, the same trigger that makes onion and garlic so hard on IBS. The dark green tops hold far fewer fructans, so the classic trick is to cook with the greens for flavour and leave the white part out, exactly the way you would use scallions. Leeks are otherwise low in histamine and salicylates.
Watch for
- The white bulb is very high in fructans, a frequent IBS, bloating and gas trigger
- The green tops are much lower in fructans, so use the green part and discard the white
- Cooking or sauteing does not remove the fructans; they are water-soluble and stay in the dish
- Mildly higher in nickel than many vegetables, a minor point on a strict low-nickel diet
Explore related in Vegetables
Compare similar foods to build a personalized list of swaps that work for your system.
Dairy Proteins Guide
Everything you need to know about dairy proteins sensitivity and smart food choices.
Dairy proteins (casein and whey) can cause reactions in people with milk protein allergy or intolerance. This is different from lactose intolerance and can cause both digestive and systemic symptoms.
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 Dairy Proteins sensitivity:
View all safe options
These foods have moderate levels and may be tolerated in small amounts:
These foods are high in dairy proteins and may trigger symptoms:
View full list
If you're sensitive to Dairy Proteins, consider these strategies:
- 1Dairy protein allergy requires complete dairy avoidance
- 2Casein and whey are the main proteins to avoid
- 3'Non-dairy' products may still contain casein
- 4Ghee may be tolerated as proteins are removed
- 5This is different from lactose intolerance - treatment differs
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 leek high in Dairy Proteins?
Dairy Proteins: low signal for most people.
Can I still eat leek if I'm sensitive to Dairy Proteins?
Usually fine in normal portions.
What else should I check?
Check Fructans, Jain, and Buddhist Vegetarian next for a fuller picture.