Evidence map›Paper›PMID 31010874›Full record

ArticleDiabetes care2019

Prepregnancy Habitual Intakes of Total, Supplemental, and Food Folate and Risk of Gestational Diabetes Mellitus: A Prospective Cohort Study.

Mengying Li, Shanshan Li, Jorge E Chavarro, Audrey J Gaskins, Sylvia H Ley, Stefanie N Hinkle, Xiaobin Wang, Ming Ding, Griffith Bell, Anne A Bjerregaard and 4 more

Open access · bronzeAbstract read
In one paragraph

Article in Diabetes care, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 5 pooled it
8.0field-weighted citation impact, top 2% of its field
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

38 citing papers in PubMed, 5 syntheses or guidelines pooled it, 71 citations in OpenAlex.

  1. Pooled it
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  6. Article
  7. Preconception Perceptions, Knowledge and Behaviours of Women With Gestational Diabetes Mellitus: A Qualitative Study.Health expectations : an international journal of public participation in health care and health policy · 2026
    Article
  8. Article
  9. Folate.Advances in nutrition (Bethesda, Md.) · 2025
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  11. 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

14 authors at 6 institutions in 2 countries.

Mengying LiEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD.
Shanshan LiSchool of Medicine, Boston University, Boston, MA.
Jorge E ChavarroDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
Audrey J GaskinsDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
Sylvia H LeyDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
Stefanie N HinkleEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD.
Xiaobin WangCenter on the Early Life Origins of Disease, Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD.ORCID 0000-0003-4451-302X
Ming DingDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.ORCID 0000-0001-9947-3446
Griffith BellEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD.
Anne A BjerregaardCentre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.
Sjurdur F OlsenDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
James L MillsEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD.
Frank B HuDepartment of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA.
Cuilin ZhangEpidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD zhangcu@mail.nih.gov.ORCID 0000-0002-8014-2708
Eunice Kennedy Shriver National Institute of Child Health and Human Development · USHarvard University · USBrigham and Women's Hospital · USStatens Serum Institut · DKBoston University · USJohns Hopkins University · US

Funding

Risk Factors for Breast Cancer in Younger NursesR01CA050385 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI ELIASSEN, A. HEATHER, WILLETT, WALTER C. · 1989 to 2019
$32.3M
Tulane COBRE in Cardiometabolic Diseases Clinical Research CoreP20GM109036 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI Tony Y. Hu · 2016 to 2026
$25.3M
Transgenic CoreP30DK046200 · NIDDK · TUFTS MEDICAL CENTER · PI HU, FRANK B · 1992 to 2021
$25.0M
Life Course Cancer Epidemiology Cohort in WomenUM1CA176726 · NCI · HARVARD SCHOOL OF PUBLIC HEALTH · PI WILLETT, WALTER C. · 2013 to 2017
$15.7M
Premonopausal Hormone Levels and Risk of Breast CancerR01CA067262 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI HANKINSON, SUSAN E · 2002 to 2011
$11.9M
Circulating plasma metabolites, diet, and risk of type 2 diabetesR01DK112940 · NIDDK · BRIGHAM AND WOMEN'S HOSPITAL · PI HU, FRANK B, MORA, SAMIA · 2018 to 2021
$2.9M
Maternal Exposure to Air Pollution and Early Pregnancy OutcomesR00ES026648 · NIEHS · EMORY UNIVERSITY · PI GASKINS, AUDREY JANE · 2019 to 2021
$730k
Maternal Exposure to Air Pollution and Early Pregnancy OutcomesK99ES026648 · NIEHS · HARVARD SCHOOL OF PUBLIC HEALTH · PI GASKINS, AUDREY JANE · 2017 to 2018
$246k
NCI NIH HHS R01 CA050385NCI NIH HHS R01 CA067262NCI NIH HHS UM1 CA176726NIAID NIH HHS HHSN272201100002INICHD NIH HHS HHSN275201000020CNICHD NIH HHS HHSN275201100002CNICHD NIH HHS HHSN275201100002GNICHD NIH HHS HHSN275201300026INICHD NIH HHS HHSN275201500003CNIDDK NIH HHS P30 DK046200NIDDK NIH HHS R01 DK112940NIEHS NIH HHS K99 ES026648NIEHS NIH HHS R00 ES026648NIGMS NIH HHS P20 GM109036
6 · The paper itself

Abstract

objectiveTo identify novel modifiable risk factors of gestational diabetes mellitus (GDM) by examining the association between prepregnancy habitual folate intake and GDM risk. RESEARCH DESIGN AND

methodsThe study included 14,553 women in the Nurses' Health Study II who reported at least one singleton pregnancy between the 1991 and 2001 questionnaires. Prepregnancy intakes of total folate, supplemental folate, and food folate were assessed using a food frequency questionnaire administered every 4 years. Incident GDM was ascertained from a self-reported physician diagnosis. Relative risks (RRs) of GDM were estimated using log-binomial models, with adjustment for demographic, lifestyle, and dietary factors.

resultsOver the study follow-up, 824 incident GDM cases were reported among 20,199 pregnancies. Women with adequate total folate intake (≥400 μg/day) had an RR of GDM of 0.83 (95% CI 0.72, 0,95,

conclusionsHigher habitual intakes of supplemental folate before pregnancy were significantly associated with lower GDM risk. If confirmed, these findings indicate that prepregnancy folic acid supplementation could offer a novel and low-cost avenue to reduce GDM risk.

Indexed as

Dietary SupplementsAdultDiabetes, GestationalEatingFeeding BehaviorFemaleFolic AcidFollow-Up StudiesHumansNutrition SurveysPreconception CarePregnancyProspective StudiesRisk FactorsFolic Acid

Identifiers

PMID31010874
PMCPMC6609948
OpenAlexW2938026554

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.