title: Vitamin D Deficiency in Pregnant Women and Their Neonates.
abstract: OBJECTIVE
  Vitamin D deficiency during pregnancy is a worldwide problem. Studies have reported prevalence ranged 18-84% in pregnant women. Receiving adequate calcium and vitamin D during pregnancy period is necessary for calcium homeostasis, fetal growth and bone mineralization. This study was aimed to determine the prevalence of vitamin D deficiency in pregnant women and their neonates in Shahroud city in the northeast Iran.
  
  
  METHODS
  In this cross-sectional study, 284 pregnant women and their neonates referred to Fatemiyeh Hospital of Shahroud were included. Blood samples of mothers and umbilical cords were collected during the delivery and were sent to laboratory in order to measure calcium and 25-hydroxy vitamin D.
  
  
  RESULTS
  Amounts of Vitamin D insufficiency (20-30 ng/mL) and deficiency (<20 ng/mL) in (mothers, neonates) were found to be (60.2%, 48.9%) and (1.1%, 2.5%) respectively. Calcium deficiency (<8.5 mg/dL) was present in 33.5% of mothers and 25% of neonates. There was a weak correlation between maternal serum and cord blood 25-hydroxy vitamin D (r=0.12, p=0.053).
  
  
  CONCLUSIONS
  More than half of the mothers and their neonates had some degrees of vitamin D deficiency. It is recommended to evaluate the nutritional status of vitamin D in pregnant women along with public health interventions to be carried out.
authors.affiliation: . raei@muq.ac.ir.
authors.forename: Maryam
authors.initials: M
authors.lastname: Abbasian
authors.forename: Reza
authors.initials: R
authors.lastname: Chaman
authors.forename: Mohammad
authors.initials: M
authors.lastname: Amiri
authors.forename: Mohammad Esmaeil
authors.initials: ME
authors.lastname: Ajami
authors.forename: Tohid
authors.initials: T
authors.lastname: Jafari-Koshki
authors.forename: Hossein
authors.initials: H
authors.lastname: Rohani
authors.forename: Seyed Mahmood
authors.initials: SM
authors.lastname: Taghavi-Shahri
authors.forename: Erfan
authors.initials: E
authors.lastname: Sadeghi
authors.forename: Mehdi
authors.initials: M
authors.lastname: Raei