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084 / 150Vegetables & aromatics

Leeks

Audited source card available

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The short answer

Add prebiotic fructans, vitamin K, folate, and allium flavor.

Evidence and scope
Food context; study findings do not grade the whole food.
Important limitation
The strongest evidence applies to varied vegetable intake; direct trials of this vegetable usually measure nutrients or intermediate markers.
Before deciding
Benefits depend on the edible form and preparation. Added sugar, sodium, refined flour, or deep-frying can change the nutritional profile.

01 / NUTRIENTS & FORM

Nutrient snapshot

The exact food form matters. Raw, cooked, drained, dried, fortified, and branded versions can have meaningfully different values.

What the current food record supports

Add prebiotic fructans, vitamin K, folate, and allium flavor.

Fiber & gutMicronutrientsPlant variety
Quantitative profile awaiting an audited source match

We have not assigned a specific composition record to this food yet. Values will appear only after the food description, preparation state, edible portion, and serving weight are verified.

How nutrient values will be verified
Planned display basis
Practical serving and per 100 g
Planned nutrient fields
Energy, protein, carbohydrate, fiber, fat, sodium, and the most relevant micronutrients
Publication rule
Show the database, record ID, food form, serving weight, and verification date

02 / RESEARCH

Evidence map: baseline and emerging signals

The current baseline stays visually separate from credible findings that are mechanistic, responder-dependent, small, or not yet replicated.

Established / currently defensibleThe strongest evidence applies to varied vegetable intake; direct trials of this vegetable usually measure nutrients or intermediate markers.

The general interpretation that does not depend on one unreplicated positive result. An established limitation is as important as an established benefit.

Audited evidence anchorMain claim not supported
PMID 8631133

A prospective cohort study on the relationship between onion and leek consumption, garlic supplement use and the risk of colorectal carcinoma in The Netherlands.

The main tested claim was not supported, or the review judged the evidence insufficient. Secondary or subgroup signals should not replace that result.

Study design
Human observational or context study
Tested form / scope
Whole food
Editorial interpretation
The strongest evidence applies to varied vegetable intake; direct trials of this vegetable usually measure nutrients or intermediate markers.
Screening record
One relevant human PubMed source was verified and classified. This is a source card, not a complete evidence synthesis or a count of favorable studies.
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Educational information only—not medical advice. Allergies, medicines, pregnancy, kidney disease, diabetes treatment, swallowing needs, and preparation safety can change what is appropriate.