Observational studyJournal of perinatology : official journal of the California Perinatal Association2021
The impact of a vegan diet on pregnancy outcomes.
Observational study in Journal of perinatology : official journal of the California Perinatal Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06669819 (Can Dietary Supplements be Linked to a Vegan Diet and Health Risk Modulation During Vegan Pregnancy, Infancy and Early Childhood), which is not on this map. Cited by 24 papers, 1 of them a synthesis that pooled 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.
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.
Can Dietary Supplements be Linked to a Vegan Diet and Health Risk Modulation During Vegan Pregnancy, Infancy and Early Childhood
Who cites it
24 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Association of a Vegan Diet during Pregnancy with Maternal and Child Outcomes: A Systematic Review.Nutrients · 2024Pooled it
- A 2 year retrospective study of vegan patients and their pregnancy outcomes in a tertiary level Irish hospital.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Association between a Periconception Healthy Plant-Based Diet and Adverse Pregnancy Outcomes.The Journal of nutrition · 2026Article
- Plant-Based Diet and Pregnancy-Related Disorders: A Narrative Review.Current nutrition reports · 2026Review
- Adherence to the EAT-Lancet Planetary Health Diet during pregnancy and associations with preterm birth and infant size: a prospective analysis from the New Hampshire Birth Cohort.The American journal of clinical nutrition · 2026Article
- Medical nutrition therapy in physiological pregnancy and in pregnancy complicated by obesity and/or diabetes: SID-AMD recommendations.Acta diabetologica · 2026Article
- Growth Trajectories in Infants From Families With Plant-Based or Omnivorous Dietary Patterns.JAMA network open · 2026Article
- Diet in Pregnancy: A Review of Current Challenges and Recommendations. A British Nutrition Foundation Briefing Paper.Nutrition bulletin · 2025Review
- Can Dietary Supplements Be Linked to a Vegan Diet and Health Risk Modulation During Vegan Pregnancy, Infancy, and Early Childhood? The VedieS Study Protocol for an Explorative, Quantitative, Cross-Sectional Study.International journal of environmental research and public health · 2025Article
- Association of Prenatal Healthy and Unhealthy Plant-Based Diets with Behavioral Outcomes in Preschool Children.Nutrients · 2025Article
- PregNut survey: knowledge, attitude, and practices of midwives regarding plant-based diets during pregnancy.BMC pregnancy and childbirth · 2025Article
- Strict vegetarian diet and pregnancy outcomes: A systematic review and meta-analysis.Metabolism open · 2025Review
- Lipidomic Signature of Pregnant and Postpartum Females by Longitudinal and Transversal Evaluation: Putative Biomarkers Determined by UHPLC-QTOF-ESIMetabolites · 2025Article
- Obstetric healthcare experiences and information needs of Dutch women in relation to their vegan diet during pregnancy.Preventive medicine reports · 2024Article
- Vegetarian diet and pregnancy outcome.European journal of obstetrics & gynecology and reproductive biology: X · 2024Article
- Toward Supplementation Guidelines for Vegan Complementary Feeding.Food science & nutrition · 2024Article
- The Significance of Plant Nutrition in the Creation of the Intestinal Microbiota-Prevention of Chronic Diseases: A Narrative Review.Medicina (Kaunas, Lithuania) · 2024Review
- Adherence to different forms of plant-based diets and pregnancy outcomes in the Danish National Birth Cohort: A prospective observational study.Acta obstetricia et gynecologica Scandinavica · 2024Observational
- Anemia in Pregnancy With CKD.Kidney international reports · 2024Review
- The nutrient profile and cost of specialty dietary patterns: a hypothetical case study.Public health nutrition · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo determine the effect of a maternal vegan diet on pregnancy outcome. STUDY
designThis is a prospective observational study. Women with a singleton pregnancy who maintained the same diet prior to, and throughout current pregnancy were enrolled. Stratification was performed according to diet type: vegans, lacto-ovo-vegetarians, fish-eaters, and omnivores.
resultsOverall, 273 women were enrolled, of them, 112 omnivores, 37 fish-eaters, 64 lacto-ovo-vegetarians, and 60 vegans. The vegan diet was significantly associated with an increased risk of small-for-gestational-age newborns compared only to an omnivore diet (RR = 5.9, 95% CI, 1.2-21.8). The incidence of preterm birth was similar in all groups. Vegans had lower birthweight compared to lacto-ovo-vegetarians (3015 ± 420 g vs. 3285 ± 482 g, P = 0.004), and to omnivores (3328 ± 495 g, P < 0.001), but not to fish-eaters. Vegans also had a lower mean gestational weight gain compared only to omnivores (11.6 ± 4.2 kg vs. 14.3 ± 4.6 kg, P = 0.001).
conclusionThe vegan diet is associated with an increased risk for small-for-gestational-age newborns and lower birthweight.
Indexed as
Identifiers
32873905What OpenQuestion holds
Registered trials
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.