Food & nutrition
Vegetables
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Vegetables form a nutrition food group that includes raw, cooked, fresh, frozen, canned and dried foods.[1]
Five MyPlate vegetable subgroups
| Subgroup | Examples |
|---|---|
| Dark green | Broccoli, spinach and kale.[1] |
| Red and orange | Carrots, tomatoes and winter squash.[1] |
| Beans, peas and lentils | Kidney beans, chickpeas and lentils.[1] |
| Starchy | White potatoes, corn and green peas.[1] |
| Other | Cucumber, mushrooms, onions and summer squash.[1] |
What vegetables contribute
The MyPlate explanation identifies dietary fibre, potassium, folate and vitamins A and C. Different vegetables contribute different amounts, so the group is not one nutritionally identical food. Preparation also matters: added sauces and seasonings can change a dish’s composition.[1]
Food-group labels depend on the framework. US MyPlate includes white potatoes among vegetables; the UK NHS excludes potatoes from 5 A Day because they usually serve as the meal’s starch. That is a counting distinction, not a finding that potatoes are harmful.[2][1]
Raw versus cooked is too broad for one verdict
A 2022 UK Biobank study followed 399,586 adults without baseline cardiovascular disease. Raw vegetable intake was associated with lower cardiovascular risk; cooked intake was not. Adjustment for socioeconomic and lifestyle characteristics substantially attenuated the associations. The authors considered residual confounding a likely explanation for much or all of the remaining association. This was not a randomized raw-versus-cooked diet experiment.[4]
Intake was self-reported at baseline, detailed cooking methods were unavailable and the cooked category excluded potatoes. The findings therefore cannot compare every cooked vegetable dish with its raw equivalent. Nor does a null association establish that cooked vegetables have no nutritional value.[4]
Cooking can change particular compounds without producing one universal nutrient score. A 2009 laboratory study compared one broccoli cultivar under specified boiling, steaming, microwaving and stir-frying conditions. Steaming retained many measured compounds better than the other tested methods, but even steaming reduced some glucosinolates. This was a composition experiment, not a trial of human disease outcomes.[5]
Its fixed cooking times, quantities and microwave settings are part of the result. They do not establish that every microwave meal is nutritionally inferior, or that retaining one compound prevents cancer. Human absorption and long-term health effects were not measured. A laboratory comparison answers a narrower question than whether a preparation improves a person’s health.[5]
Bagged salad and sprouts have different handling questions
FDA says produce labelled prewashed or ready to eat can be used without rewashing. If it is washed again, avoid contamination from unclean surfaces or utensils. Ordinary produce washing uses running water, not soap.[7]
Raw sprouts present a separate issue: warm, humid sprouting conditions can multiply bacteria already on seeds, including in clean home conditions. FDA advises children, older adults, pregnant people and those with weakened immune systems to avoid raw or lightly cooked sprouts. Thorough cooking reduces the risk.[7]
Evidence & uncertainty
Vegetable intake is studied through different foods, preparations and outcomes. An observational raw-versus-cooked comparison cannot establish that raw vegetables are always healthier; its results were substantially affected by adjustment for other characteristics.[4]
Selected-source overview · Independent review pendingPublished questions
What counts as a vegetable food?
Selected-source overview · Independent review pending. Read the evidence context.
MyPlate includes fresh, frozen, canned, dried, raw and cooked vegetables, and 100% vegetable juice. These forms differ.[1]
Evidence behind this answer
- Vegetables: food group, subgroups and nutrients
agency condition or prevention explanation · Date not stated
Original official indexed definition and selected subgroup/nutrient passages inspected; current direct retrieval unavailable · Original indexed food-group, five-subgroup, example and nutrient passages; current direct page unavailable; not a comprehensive current US policy review
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
What are the main vegetable groups?
Selected-source overview · Independent review pending. Read the evidence context.
MyPlate lists dark green, red and orange, beans/peas/lentils, starchy and other vegetables. Its classifications serve a nutrition framework.[1]
Evidence behind this answer
- Vegetables: food group, subgroups and nutrients
agency condition or prevention explanation · Date not stated
Original official indexed definition and selected subgroup/nutrient passages inspected; current direct retrieval unavailable · Original indexed food-group, five-subgroup, example and nutrient passages; current direct page unavailable; not a comprehensive current US policy review
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Are raw vegetables always better than cooked vegetables?
Selected-source overview · Independent review pending. Read the evidence context.
No universal verdict follows from these studies. The cohort comparison had confounding concerns, while the broccoli laboratory experiment measured selected compounds under specific cooking conditions.[4][5]
Evidence behind this answer
- Raw and Cooked Vegetable Consumption and Risk of Cardiovascular Disease: A Study of 400,000 Adults in UK Biobank
observational study · 2022
Original full article abstract and selected methods/results/limitations inspected directly; no independent risk-of-bias appraisal · Front Nutr; DOI 10.3389/fnut.2022.831470; abstract, intake measurement, confounder adjustment and limitations - Effects of different cooking methods on health-promoting compounds of broccoli
laboratory or preclinical study · 2009
Original publisher PDF selected methods, results and discussion inspected directly; no human clinical outcomes assessed · J Zhejiang Univ Sci B 10:580–588; DOI 10.1631/jzus.B0920051; original PDF methods and selected composition results; one cultivar, fixed protocols
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Do all vegetables supply the same nutrients?
Selected-source overview · Independent review pending. Read the evidence context.
No. The food group includes different sources of fibre, potassium, folate and vitamins A and C. A vegetable name alone does not specify the finished dish.[1]
Evidence behind this answer
- Vegetables: food group, subgroups and nutrients
agency condition or prevention explanation · Date not stated
Original official indexed definition and selected subgroup/nutrient passages inspected; current direct retrieval unavailable · Original indexed food-group, five-subgroup, example and nutrient passages; current direct page unavailable; not a comprehensive current US policy review
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Do vegetable studies prove an exact daily dose?
Selected-source overview · Independent review pending. Read the evidence context.
The selected mortality analysis observed diet and outcomes. Its apparent plateau does not establish a universal personal dose or biological ceiling.[3]
Evidence behind this answer
- Fruit and Vegetable Intake and Mortality: Results From 2 Prospective Cohort Studies of US Men and Women and a Meta-Analysis of 26 Cohort Studies
observational study · 2021
Original indexed abstract and selected original PMC funding metadata inspected after direct retrieval was unavailable; no independent full-text appraisal · Circulation 143:1642–1654; DOI 10.1161/CIRCULATIONAHA.120.048996; same publication as the fruit-page reference; shared attribution allowance
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Is broccoli proven to prevent heart attacks?
Selected-source overview · Independent review pending. Read the evidence context.
The VESSEL trial measured short-term blood pressure after vegetable mixtures, not heart attacks. It did not isolate broccoli or establish long-term prevention.[6]
Evidence behind this answer
- Cruciferous vegetables lower blood pressure in adults with mildly elevated blood pressure in a randomized, controlled, crossover trial: the VEgetableS for vaScular hEaLth (VESSEL) study
clinical intervention study · 2024
Original publisher abstract and selected trial methods/results, limitations, funding and competing-interest passages inspected directly; no independent full-trial appraisal · BMC Med 22:353; DOI 10.1186/s12916-024-03577-8; 18 recruited, 17 blood-pressure analyses; two two-week soup periods; funding, disclosures and limitations
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Do I need to rewash ready-to-eat bagged salad?
Selected-source overview · Independent review pending. Read the evidence context.
FDA says prewashed or ready-to-eat produce can be used without rewashing. If rewashing, keep surfaces and utensils clean to avoid adding contamination.[7]
Evidence behind this answer
- Selecting and Serving Produce Safely
agency condition or prevention explanation · Date not stated
Selected relevant original official page passages inspected · Prewashed/ready-to-eat produce and sprouts: warm humid conditions, vulnerable groups and cooking; same publication as fruit handling reference
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Why do raw sprouts carry a food-safety concern?
Selected-source overview · Independent review pending. Read the evidence context.
Bacteria on seeds can multiply during warm, humid sprouting. FDA recommends avoiding raw or lightly cooked sprouts for higher-risk groups; thorough cooking reduces risk.[7]
Evidence behind this answer
- Selecting and Serving Produce Safely
agency condition or prevention explanation · Date not stated
Selected relevant original official page passages inspected · Prewashed/ready-to-eat produce and sprouts: warm humid conditions, vulnerable groups and cooking; same publication as fruit handling reference
This answer summarizes selected sources. An independent appraisal of the complete evidence has not been completed.
Long-term associations need interpretation
A 2021 analysis combined two US cohorts with a meta-analysis of 26 cohorts in total. Higher fruit-and-vegetable intake was associated with lower mortality, with the lowest observed risk around five combined servings daily. Diet was observed, rather than assigned randomly. The result supports discussing dietary patterns, but cannot determine an exact personal requirement or prove that one extra vegetable caused a mortality difference.[3]
What the cruciferous-vegetable trial actually tested
The 2024 VESSEL crossover trial recruited 18 adults with mildly elevated blood pressure; 17 contributed to the blood-pressure analysis. Participants ate 300 grams daily of cooked, blended cruciferous-vegetable soup or root-and-squash soup for two weeks each. Mean 24-hour systolic blood pressure was 2.5 mmHg lower with the cruciferous soup. This was a short-term comparison between two vegetable mixtures, not vegetables versus no vegetables.[6]
The trial was small, mostly involved women and did not measure heart attacks or survival. It cannot identify broccoli alone as responsible, supply a personal treatment dose or establish that the effect persists. Public/university funding was reported, and the authors declared no competing interests.[6]
References
- Vegetables: food group, subgroups and nutrients
Agency condition or prevention explanation
US Department of Agriculture / MyPlate · Content/publication date: not stated
Accessed: 2026-10-10 UTC · Original official indexed definition and selected subgroup/nutrient passages inspected; current direct retrieval unavailable
Cited sections: Original indexed food-group, five-subgroup, example and nutrient passages; current direct page unavailable; not a comprehensive current US policy review - 5 A Day: what counts?, with linked Why 5 A Day explanation
Agency condition or prevention explanation
NHS · Content/publication date: not stated
Accessed: 2026-10-10 UTC · Selected original what-counts and linked Why guidance passages inspected directly; not an independent appraisal of all underpinning evidence
Cited sections: Potatoes, yams and cassava counting rule; linked Why page reviewed 30 September 2026; allowance shared across the 5 A Day framework - Fruit and Vegetable Intake and Mortality: Results From 2 Prospective Cohort Studies of US Men and Women and a Meta-Analysis of 26 Cohort Studies
Observational study
Wang DD and colleagues · Content/publication date: 2021
Accessed: 2026-10-10 UTC · Original indexed abstract and selected original PMC funding metadata inspected after direct retrieval was unavailable; no independent full-text appraisal
Cited sections: Circulation 143:1642–1654; DOI 10.1161/CIRCULATIONAHA.120.048996; same publication as the fruit-page reference; shared attribution allowance - Raw and Cooked Vegetable Consumption and Risk of Cardiovascular Disease: A Study of 400,000 Adults in UK Biobank
Observational study
Feng Q and colleagues · Content/publication date: 2022
Accessed: 2026-10-10 UTC · Original full article abstract and selected methods/results/limitations inspected directly; no independent risk-of-bias appraisal
Cited sections: Front Nutr; DOI 10.3389/fnut.2022.831470; abstract, intake measurement, confounder adjustment and limitations - Effects of different cooking methods on health-promoting compounds of broccoli
Laboratory or preclinical study
Yuan G-f, Sun B, Yuan J and Wang Q-m · Content/publication date: 2009
Accessed: 2026-10-10 UTC · Original publisher PDF selected methods, results and discussion inspected directly; no human clinical outcomes assessed
Cited sections: J Zhejiang Univ Sci B 10:580–588; DOI 10.1631/jzus.B0920051; original PDF methods and selected composition results; one cultivar, fixed protocols - Cruciferous vegetables lower blood pressure in adults with mildly elevated blood pressure in a randomized, controlled, crossover trial: the VEgetableS for vaScular hEaLth (VESSEL) study
Clinical intervention study
Connolly EL and colleagues · Content/publication date: 2024
Accessed: 2026-10-10 UTC · Original publisher abstract and selected trial methods/results, limitations, funding and competing-interest passages inspected directly; no independent full-trial appraisal
Cited sections: BMC Med 22:353; DOI 10.1186/s12916-024-03577-8; 18 recruited, 17 blood-pressure analyses; two two-week soup periods; funding, disclosures and limitations - Selecting and Serving Produce Safely
Agency condition or prevention explanation
US Food and Drug Administration · Content/publication date: not stated
Accessed: 2026-10-10 UTC · Selected relevant original official page passages inspected
Cited sections: Prewashed/ready-to-eat produce and sprouts: warm humid conditions, vulnerable groups and cooking; same publication as fruit handling reference
Scope & review
- Population
- Readers comparing ordinary vegetable groups and preparations; source-specific higher-risk food-safety groups are identified
- Exposure or intervention
- Vegetable groups, raw/cooked foods, vegetable soup mixtures, bagged salads and sprouts
- Comparison
- Source-specific alternative products and matched/control conditions
- Outcomes
- Nutrient composition, cardiovascular/mortality associations, short-term blood pressure and food handling
- Timeframe
- Selected 2009/2021/2022/2024 research and retrieved official explanations; no complete 2026 literature search
- Jurisdiction
- Selected US agency sources, dated professional guidance and original international research; jurisdiction and eligibility are source-specific
Selected-source educational explanation. Official guidance, original study findings and editorial interpretation are distinguished. No exhaustive search, independent systematic synthesis or qualified medical review has been completed.
Sources checked on their individual access dates. Selected sources were checked; ongoing surveillance and qualified review have separate statuses on the coverage page.
Revision history
- 2026-10-10 UTC: Added a sourced explanation in a bounded ten-article batch; qualified review remains pending.
What this article still leaves open
- Selected studies do not constitute a complete synthesis of every vegetable, cooking method or health outcome.
- The indexed MyPlate explanation provides food-group terminology; current direct retrieval and comprehensive US dietary-policy review were unavailable.
- Short-term blood pressure, laboratory compound retention and observational mortality are distinct outcomes; no individual treatment prescription is established.
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