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Nutrients 2014, 6(12), 5600-5610; doi:10.3390/nu6125600

Vitamin D Status and Related Factors in Newborns in Shanghai, China

1
MOE-Shanghai Key Lab of Children's Environmental Health, Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
2
Departments of Pathology and Bio-Bank, the International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University, Shanghai 200030, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 8 August 2014 / Revised: 11 November 2014 / Accepted: 20 November 2014 / Published: 4 December 2014
(This article belongs to the Special Issue Nutrition in Pregnancy)
View Full-Text   |   Download PDF [157 KB, uploaded 4 December 2014]

Abstract

With the increasing recognition of the importance of the non-skeletal effects of vitamin D (VitD), more and more attention has been drawn to VitD status in early life. However, the VitD status of newborns and factors that influence VitD levels in Shanghai, China, remain unclear. A total of 1030 pregnant women were selected from two hospitals in Shanghai, one of the largest cities in China located at 31 degrees north latitude. Umbilical cord serum concentrations of 25-hydroxy vitamin D [25(OH)D] were measured by LC-MS-MS, and questionnaires were used to collect information. The median cord serum 25(OH)D concentration was 22.4 ng/mL; the concentration lower than 20 ng/mL accounted for 36.3% of the participants, and the concentration lower than 30 ng/mL for 84.1%. A multivariable logistic regression model showed that the determinants of low 25(OH)D status were being born during autumn or winter months and a lack of VitD-related multivitamin supplementation. The relative risk was 1.7 for both autumn (95% CI, 1.1–2.6) and winter (95% CI, 1.1–2.5) births (p < 0.05). VitD-related multivitamin supplementation more than once a day during pregnancy reduced the risk of VitD deficiency [adjusted OR (aOR) = 0.6, 95% CI (0.45–1.0) for VitD supplementation] (p < 0.05). VitD deficiency and insufficiency are common in newborns in Shanghai, China, and are independently associated with season and VitD supplementation. Our findings may assist future efforts to correct low levels of 25(OH)D in Shanghai mothers and their newborn children. View Full-Text
Keywords: vitamin D; related factors; newborn vitamin D; related factors; newborn
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yu, X.; Wang, W.; Wei, Z.; Ouyang, F.; Huang, L.; Wang, X.; Zhao, Y.; Zhang, H.; Zhang, J. Vitamin D Status and Related Factors in Newborns in Shanghai, China. Nutrients 2014, 6, 5600-5610.

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