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J Perinatol. 2007 Sep;27(9):568-71. Epub 2007 Jul 12.

Neonatal vitamin D status at birth at latitude 32 degrees 72': evidence of deficiency.

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  • 1Division of Neonatology, Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA.

Abstract

OBJECTIVE:

With vitamin D deficiency as a serious public health problem, vitamin D status at birth was measured in neonates at latitude 32 degrees 72' (southeastern United States).

STUDY DESIGN:

In umbilical cord blood, vitamin D status, demonstrated by circulating 25-hydroxyvitamin D, was measured and related to race and season of birth.

RESULT:

The mean+/-standard deviation of 25-hydroxyvitamin D in 100 cord blood samples was 13.5+/-8.3 ng/ml for the cohort. African-American infants, with a mean+/-standard deviation of 10.5+/-6.0 ng/ml, demonstrated significantly lower vitamin D status than Caucasian infants, with a mean+/-standard deviation of 19.5+/-9.6 ng/ml (P<0.0001). By season, the mean 25-hydroxyvitamin D level at birth in November-March compared to April-October was 11.3 ng/ml lower in Caucasian infants (from 29.0 to 17.7 ng/ml) and 3 ng/ml lower in African-American infants (from 13.1 to 10.1 ng/ml).

CONCLUSION:

The prevalence of vitamin D insufficiency is high in this cohort. African-American infants demonstrate significantly lower vitamin D status at birth than Caucasian infants. Seasonality, while significant in both groups, had a greater impact on the vitamin D status of Caucasian newborns.

PMID:
17625571
[PubMed - indexed for MEDLINE]
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