Evidence map›Paper›PMID 34006925›Full record

SynthesisBritish journal of cancer2021

Fruit and vegetable consumption and incident breast cancer: a systematic review and meta-analysis of prospective studies.

Maryam S Farvid, Junaidah B Barnett, Nicholas D Spence

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in British journal of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 8 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 8 syntheses or guidelines pooled it.

  1. Sustainable dietary recommendations for the Spanish population.European journal of clinical nutrition · 2026
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  7. Consumption of fruits and vegetables among adolescents in Arab Countries: a systematic review.The international journal of behavioral nutrition and physical activity · 2023
    Pooled it
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  17. Breast cancer: pathogenesis and treatments.Signal transduction and targeted therapy · 2025
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Maryam S FarvidDepartment of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA. mfarvid@hsph.harvard.edu.ORCID http://orcid.org/0000-0003-1783-4186
Junaidah B BarnettDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Nicholas D SpenceDepartment of Sociology and Department of Health and Society, University of Toronto, Toronto, ON, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe conducted a systematic review and meta-analysis of prospective studies to clarify the relation of fruit and vegetable consumption with incident breast cancer.

methodsWe searched systematically PubMed and EMBASE databases up to November 2020 to include prospective studies that reported the association of fruit and vegetable consumption with incident breast cancer. The pooled relative risks (RRs) and 95% confidence intervals (CIs) were calculated for the highest versus the lowest category of total fruit and vegetable, total fruit and total vegetable consumption, as well as fruit juice and subgroups of vegetables in relation to breast cancer incidence, using a random-effect model.

resultsTotal fruit and vegetable consumption was associated with lower overall (RR = 0.91, 95% CI = 0.87-0.95) and postmenopausal breast cancer risk (RR = 0.88, 95% CI = 0.79-0.99). Total fruit consumption was associated with lower overall (RR = 0.93, 95% CI = 0.88-0.99) and postmenopausal breast cancer risk (RR = 0.93, 95% CI = 0.87-0.99). Total fruit and vegetable intake were associated with 11% and 26% lower risk of oestrogen- and progesterone-receptor-positive (ER+/PR+) and -negative (ER-/PR-) breast cancer, respectively. Total vegetable consumption was associated with 27% lower risk of ER-/PR- breast cancer. Fruit juice consumption was associated with increased overall breast cancer risk (RR = 1.04, 95% CI = 1.01-1.07). We did not find significant associations for subgroups of vegetable intake and breast cancer risk.

conclusionsThese findings suggest that high total fruit and vegetable consumption are associated with reduced risk of overall, postmenopausal, ER+/PR+ and ER-/PR- breast cancer.

Indexed as

Breast NeoplasmsDietFemaleFruitHumansPostmenopauseReceptors, EstrogenReceptors, ProgesteroneVegetablesReceptors, EstrogenReceptors, Progesterone

Identifiers

PMID34006925
PMCPMC8292326

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.