ArticleBJOG : an international journal of obstetrics and gynaecology2023
Associations between ambient temperature and pregnancy outcomes from three south Asian sites of the Global Network Maternal Newborn Health Registry: A retrospective cohort study.
Article in BJOG : an international journal of obstetrics and gynaecology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.
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Who cites it
20 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- A systematic review and meta-analysis on heat thresholds for maternal health and birth outcomes.Nature communications · 2026Pooled it
- Impact of ambient heat exposure on pregnancy outcomes in low- and middle-income countries: A systematic review.Women's health (London, England)Pooled it
- Aspirin and Preterm Birth Among Pregnant People With Increased Heat Exposure: Secondary Analysis of a Randomized Clinical Trial.JAMA network open · 2026Trial
- The Impact of Ambient Heat on Perinatal and Neonatal Health in the Context of Climate Change: A Scoping Review.Current environmental health reports · 2026Article
- Intersection of Climate and Environmental Change and Priority Health Outcomes Across the Life Course: Working Group 1 Report from the "Agriculture and Diet: Value Added for Nutrition, Translation, and Adaptation in a Global Ecology" (ADVANTAGE) Project.Advances in nutrition (Bethesda, Md.) · 2026Review
- Safeguarding maternal health against extreme heat in India: A policy analysis of state-level heat action plans.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Heat Stress and Placental Abruption: A Space-Time Stratified Case-Crossover Study.BJOG : an international journal of obstetrics and gynaecology · 2026Article
- Effect of non-optimal ambient temperature on preterm birth and its heterogeneity in various social sub-groups: a report from the Indo Gangetic Plains of India.BMC pregnancy and childbirth · 2026Article
- Prenatal exposure to heat stress and postpartum depressive symptoms in the MADRES cohort in urban Los Angeles.Environmental research · 2026Article
- Disproportionate climate burden of rising temperatures on low birth weight in Pakistan.BMC medicine · 2026Article
- Rising Global Temperatures and Kidney Health: A Comprehensive Review of Current Evidence.Life (Basel, Switzerland) · 2025Review
- Heatwaves and Home Births: Understanding the Impact of Extreme Heat on Place of Delivery in India.GeoHealth · 2025Article
- Early Pregnancy in Times of Climate Change: First-Trimester Heat Exposure Is Associated With Reduction in Fetal Crown-Rump Length in the 12th/13th Week of Gestation-A Retrospective Study From Vienna, Austria.American journal of human biology : the official journal of the Human Biology Council · 2025Article
- Impact of climate change and environmental adversities on maternal and fetal health: the role of clinical practices and providers in mitigating effects and prioritising women's health in the UK.Frontiers in global women's health · 2025Review
- Maternal and child health services during the COVID-19 pandemic in India: an interrupted time-series analysis.Frontiers in global women's health · 2025Article
- Invited Perspective: Climate Change and Maternal Mental Health-Looking beyond High-Income Countries.Environmental health perspectives · 2024Article
- Improving maternal, neonatal and child health outcomes in low-resource settings: Translating research evidence to practice - report from The Third International Conference on Maternal, Newborn and Child Health.BJOG : an international journal of obstetrics and gynaecology · 2023Article
- Article
- Global warming and adverse pregnancy outcomes - the need for research and intervention.International journal of health sciencesArticle
- Impact of extreme ambient temperatures on low birth weight: Insights from empirical findings in Pakistan.Women's health (London, England)Article
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Authors and funding
18 authors.
Funding
Abstract
objectiveGrowing evidence suggests that environmental heat stress negatively influences fetal growth and pregnancy outcomes. However, few studies have examined the impact of heat stress on pregnancy outcomes in low-resource settings. We combined data from a large multi-country maternal-child health registry and meteorological data to assess the impacts of heat stress.
designRetrospective cohort study.
settingThree sites based in south Asia as part of the Global Network for Women's and Children's Health research in India (Belagavi and Nagpur) and Pakistan (Thatta). POPULATION OR SAMPLE: Data from women enrolled between 2014 and 2020 in the Global Network's Maternal Newborn Health Registry (MNHR), a prospective, population-based registry of pregnancies, were used.
methodsA total of 126 273 pregnant women were included in this analysis. Daily maximal air temperatures (T MAIN OUTCOMES MEASURES: Incidence of stillbirth, preterm birth, low birthweight (<2500 g) or evidence of pregnancy hypertension or pre-eclampsia.
resultsIn the overall cohort, risk of preterm birth was positively associated with greater temperature in the second trimester (relative risk [RR] 1.05, 95% CI 1.02-1.07, p = 0.0002). Among individual sites, the risk of preterm birth was greatest in Nagpur (RR 1.07, 95% CI 1.03-1.11, p = 0.0005) and associated with second-trimester temperature. The overall risk of low birthweight was associated with ambient temperature in second trimester (RR 1.02, 95% CI 1.01-1.04, p = 0.01). The risk for LBW was associated with first-trimester heat in Thatta and with second-trimester heat in Nagpur. Finally, the overall risk of gestational hypertensive disease was associated with greater temperature in the third trimester among all sites (RR 1.07, 95% CI 1.02-1.12, p = 0.005) and was particularly significant for Nagpur (RR 1.13, 95% CI 1.05-1.23, p = 0.002). These findings highlight the increased risk of detrimental obstetric and neonatal outcomes with greater temperature.
conclusionIn a multi-country, community-based study, greater risk of adverse outcomes was observed with increasing temperature. The study highlights the need for deeper understanding of covarying factors and intervention strategies, especially in regions where high temperatures are common.
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