The study reveals that heat exposure increases health risks for pregnant women and their babies, impacting outcomes like preterm birth, low birth weight, and hypertensive disorders.
By Dr. Sanchari Sinha Dutta, Ph.D.Reviewed by Benedette Cuffari, M.Sc.Nov 10 2024 Exposure to extreme heat may pose serious risks during pregnancy, from preterm births to hypertensive complications, highlighting an urgent public health issue amid rising global temperatures.
Introduction The global rise in environmental temperature, combined with the increasing frequency of extreme weather events, is becoming a major public health concern, especially for vulnerable populations, including pregnant women and newborns. Maternal health outcomes About 75% of the selected studies highlighted five critical health outcomes related to heat exposure, including preterm birth, low birth weight, hypertensive disorders during pregnancy, congenital disabilities, and stillbirth.
Fetal health outcomes Stillbirth and congenital disabilities were the most frequently reported heat exposure-related fetal outcomes. Moreover, one meta-analysis of five studies reported a 1.14 increased risk of stillbirth for every 1°C increase in heat exposure. Newborn health outcomes Preterm birth and low birth weight were the most frequently addressed heat-related newborn outcomes in the selected studies, both of which are major determinants of child mortality, health, and well-being. Overall, a large body of evidence across diverse geographical locations and populations established a dose-response relationship between heat exposure and preterm birth.
Other heat-related newborn outcomes included small-for-gestational-age, neonatal admissions, neonatal morbidity, and neonatal death.
Pregnancy Abortion Birth Weight Bleeding Diabetes Frequency Gestational Diabetes Labor Maternal Health Medicine Metabolism Newborn Public Health Stillbirth Stress
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