Association of Modifiable and Nonmodifiable Factors with Vitamin D Status in Pregnant Women and Neonates in Oakland, CA

Abstract There is little information on the contribution of modifiable vs nonmodifiable factors to maternal and neonatal vitamin D status in temperate regions of the United States. The purpose of this cross-sectional observation study conducted between December 2006 and February 2008 was to identify...

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Bibliographic Details
Published in:Journal of the American Dietetic Association 2011, Vol.111 (1), p.111-116
Main Authors: Dror, Daphna K., RD, PhD, King, Janet C., PhD, Durand, David J., MD, Allen, Lindsay H., PhD
Format: Article
Language:English
Subjects:
Adolescent
Adult
California - epidemiology
Cross-Sectional Studies
Dietary Supplements
Female
Fetal Blood - chemistry
Gastroenterology and Hepatology
Humans
Infant, Newborn - blood
Internal Medicine
Life Style
Male
Middle Aged
Mothers
Nutritional Status
Pregnancy
Pregnancy - blood
Pregnancy Complications - blood
Pregnancy Complications - epidemiology
Pregnancy Complications - etiology
Prenatal Nutritional Physiological Phenomena - physiology
Risk Factors
Seasons
Skin Pigmentation - physiology
Vitamin D
Vitamin D - administration & dosage
Vitamin D - blood
Vitamin D Deficiency - blood
Vitamin D Deficiency - epidemiology
Vitamin D Deficiency - etiology
Womens health
Young Adult
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Summary:Abstract There is little information on the contribution of modifiable vs nonmodifiable factors to maternal and neonatal vitamin D status in temperate regions of the United States. The purpose of this cross-sectional observation study conducted between December 2006 and February 2008 was to identify associations between observed and measured maternal characteristics and vitamin D status at term in pregnant women and their infants in a multiethnic community in Oakland, CA. Two hundred seventy-five pregnant women aged 18 to 45 years and carrying a singleton fetus were recruited and data from 210 mother-infant pairs were included in analyses. Analysis of covariance identified predictors of maternal and cord serum 25-hydroxyvitamin D [25(OH)D] in a multivariate model considering vitamin D intake, lifestyle factors, and skin pigmentation. Maternal serum 25(OH)D was significantly associated with season of delivery ( P =0.0002), average daily D intake ( P =0.0008), right upper inner arm pigmentation ( P =0.0035), and maternal pre- or early-pregnancy body mass index (calculated as kg/m2 ) ( P =0.0207). The same factors were significant for cord serum 25(OH)D, which was highly correlated with maternal serum 25(OH)D ( r =0.79; P
ISSN:0002-8223
2212-2672
1878-3570
2212-2680
DOI:10.1016/j.jada.2010.10.002