Objective: To assess the effects of vitamin D supplementation during pregnancy on obstetric outcomes and birth variables.
Design: Systematic review and meta-analysis of randomized controlled trials (RCTs).
Setting: Not applicable.
Patient(s): Pregnant women and neonates.
Intervention(s): PubMed and 5 other research databases were searched through March 2014 for RCTs evaluating vitamin D supplementation ± calcium/vitamins/ferrous sulfate vs. a control (placebo or active) during pregnancy.
Main Outcome Measure(s): Measures were: circulating 25-hydroxyvitamin D [25(OH)D] levels, preeclampsia, gestational diabetes mellitus (GDM), small for gestational age (SGA), low birth weight, preterm birth, birth weight, birth length, cesarean section. Mantel-Haenszel fixed-effects models were used, owing to expected scarcity of outcomes. Effects were reported as relative risks and their 95% confidence intervals (CIs).
Result(s): Thirteen RCTs (n = 2,299) were selected. Circulating 25(OH)D levels were significantly higher at term, compared with the control group (mean difference: 66.5 nmol/L, 95% CI 66.2-66.7). Birth weight and birth length were significantly greater for neonates in the vitamin D group; mean difference: 107.6 g (95% CI 59.9-155.3 g) and 0.3 cm (95% CI 0.10-0.41 cm), respectively. Incidence of preeclampsia, GDM, SGA, low birth weight, preterm birth, and cesarean section were not influenced by vitamin D supplementation. Across RCTs, the doses and types of vitamin D supplements, gestational age at first administration, and outcomes were heterogeneous.
Conclusion(s): Vitamin D supplementation during pregnancy was associated with increased circulating 25(OH)D levels, birth weight, and birth length, and was not associated with other maternal and neonatal outcomes. Larger, better-designed RCTs evaluating clinically relevant outcomes are necessary to reach a definitive conclusion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.fertnstert.2015.02.019 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The role of α-tocopherol in the prevention and treatment of Alzheimer's disease.
Mol Cell Biochem
January 2025
Department of Clinical Biochemistry and Laboratory Diagnostics, Institute of Medical Sciences, University of Opole, Oleska 48, 45-052, Opole, Poland.
Scientific reports from various areas of the world indicate the potential role of tocopherols (vitamin E) in particular α-tocopherol in the prevention and therapy of Alzheimer's disease. The current phenomenon is related to the growing global awareness of eating habits and is also determined by the need to develop the prevention, management and therapy of Alzheimer's disease. This article is a review of current research on the action of the active form of vitamin E-α-tocopherol and its impact on the development and course of Alzheimer's disease.
View Article and Find Full Text PDFLettuce fortification through vitamin B-producing bacteria - proof of concept study.
J Sci Food Agric
January 2025
Center for Health & Bioresources, Bioresources Unit, AIT Austrian Institute of Technology, Tulln, Austria.
Background: Vitamin B (cobalamin) can be produced de novo only by certain bacteria and archaea. It plays a crucial role in the health of animals and humans, which obtain it only through diet, mainly from animal products. This study aimed to identify endophytic bacterial strains capable of synthesizing vitamin B and enriching edible plants with it as a potential solution for vitamin B deficiency in vegetarians, vegans, and people with poor diets.
View Article and Find Full Text PDFPrevalence of Vitamin D deficiency among individuals with Fontan palliation: A systematic review and meta-analysis.
Ann Pediatr Cardiol
December 2024
Postgraduate School of Public Health, Universitas Muhammadiyah Aceh, Banda Aceh, Indonesia.
Background: Children with one functional ventricle might receive the Fontan procedure as palliative management to prolong their lives. However, the heart remains functionally univentricular, which may result in disrupted absorption of nutrients, including Vitamin D. Individuals with Fontan circulation have limited physical activity and sun exposure, which might further contribute to Vitamin D deficiency.
View Article and Find Full Text PDFIntroduction: GLP-1 medications are widely used for weight loss in patients with and without type 2 diabetes. However, limited research exists on their effects in non-diabetic patients, particularly concerning mitochondrial function. This case report investigates the potential of altered mitochondrial dysfunction as a cause of side effects of GLP-1 medications in patients without type 2 diabetes.
View Article and Find Full Text PDFThe association between Vitamin D deficiency and clinical pregnancy rate in IVF patients with different age.
Front Endocrinol (Lausanne)
January 2025
Center for Reproductive Medicine, Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Background: The aim of the present study was to investigate the impact of serum VD status on IVF outcomes and to observe the effect of VD deficiency on the expression of the endometrial receptivity marker HOXA10.
Materials And Methods: Patients undergoing their first IVF cycles were divided into 3 groups according to VD levels (deficient: <20 ng/mL, insufficient: 20-29.9 ng/mL), and replete ≥30 ng/mL).
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!