Leeks — Evidence-Based Food Profile | Designed Nutraceuticals
Leeks
Member of the allium family (with garlic and onions) providing kaempferol, allicin precursors, inulin, and folate. Kaempferol is one of the most studied anti-cancer flavonoids. Inulin content provides prebiotic benefit. Milder flavor than onions makes leeks more versatile. Traditional use in Welsh and French cuisine for cardiovascular and digestive health.
7
Conditions studied
7
Documented benefits
Moderate
Evidence level
Food
Classification
Key Benefits
- Kaempferol -- potent anti-cancer flavonoid; reduces ovarian, lung, and colorectal cancer riskEstablished
- Allicin precursors -- cardiovascular protection, antimicrobial (milder than garlic)Established
- Inulin -- prebiotic fiber; feeds Bifidobacterium, improves gut healthEstablished
- Folate -- DNA synthesis, homocysteine reductionEstablished
- Vitamin K1 -- bone mineralizationEstablished
- Polyphenols -- antioxidant, anti-inflammatoryEstablished
- Manganese -- antioxidant enzyme cofactorEstablished
Relevant Conditions
Food Sources
- Sauteed leeks (classic preparation)
- Leek and potato soup
- Raw leeks in salads (highest kaempferol)
- Leeks in quiches and tarts
Cautions & Interactions
Wash thoroughly between layers -- soil accumulates in leaf layers. Vitamin K1 interaction with warfarin. Inulin may cause gas -- introduce gradually. Green tops are edible and more nutritious than white parts.
Tags
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