The Prevalence of Hypovitaminosis D and Its Risk Factors in Pregnant Women and Their Newborns in the Middle East: A Systematic Review

Overview

Journal Int J Reprod Biomed

Specialty Reproductive Medicine

Date 2019 Dec 7

PMID 31807718

Citations 9

Authors

Shayesteh Hajizadeh

Judy Rankin Shary

Susan Gayle Reed

Carol Lynn Wagner

Affiliations

Soon will be listed here.

Abstract

Background: Pregnant women and newborns are at risk for vitamin D deficiency (VDD). Also, poor health outcomes for pregnant women with VDD are reported in the published literature.

Objective: The aim of this systematic review was to estimate the prevalence of hypovitaminosis D and the associated risk factors for hypovitaminosis D in Middle Eastern pregnant women and their newborns.

Results: The prevalence of circulating 25-hydroxyvitamin D (25(OH)D) 50 nmol/L as a marker of vitamin D status in pregnant women and their newborns was between 24.5-98% and 22-100%, respectively. The prevalence of 25(OH) D 25 nmol/L in pregnant women and their newborns was over a wide range between 16.7-80% and 22-82%, respectively. Predictors for low maternal and neonatal 25(OH)D concentrations included decreased vitamin D synthesis due to reduced exposure to sunlight and decreased nutritional intake of vitamin D. A predictor of low neonatal 25(OH)D concentrations included maternal vitamin D status and the correlation between vitamin D concentrations in maternal and cord blood.

Conclusion: The high prevalence of VDD in the pregnant women of the Middle East underscores the necessity of implementing national prevention and intervention strategies. A clear policy for clinicians and healthcare workers is needed for screening and maintaining sufficient vitamin D status during pregnancy.

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