Hypovitaminosis D in Obese and Overweight Schoolchildren

Overview

Journal J Clin Res Pediatr Endocrinol

Specialties Endocrinology
Pediatrics

Date 2011 Feb 15

PMID 21318069

Citations 16

Authors

Filiz Mine Cizmecioglu

Nilay Etiler

Uzay Gormus

Onur Hamzaoglu

Sukru Hatun

Affiliations

Soon will be listed here.

Abstract

Aim: To determine the prevalence of vitamin D hypovitaminosis among obese and overweight schoolchildren.

Design: A cross-sectional population based sample.

Methods: In a cross-sectional study, 301 students (177 girls and 124 boys) aged 11-19 years were selected by multistage stratified sampling design. Subjects were classified according to their body mass index as obese, overweight and normal. Serum 25-hydroxyvitamin D (25-OHD), intact parathyroid hormone (iPTH) and alkaline phosphatase (ALP) were measured in late winter months. Vitamin D deficiency was defined as a 25-OHD 20 ng/ml.

Results: The prevalence of hypovitaminosis D was found as 65% in all students. Vitamin D deficiency was found in 12% and insufficiency in 53% of all students. Vitamin D deficiency in female students was about two times more common than in males. In obese and overweight schoolchildren with hypovitaminosis D, serum 25-OHD levels decreased as BMI increased. There were no correlations between serum 25-OHD and ALP and iPTH levels.

Conclusion: Vitamin D deficiency and insufficiency are common in obese and overweight schoolchildren, especially in girls. Obesity could be a risk factor in terms of hypovitaminosis D in adolescents. Vitamin D supplementation should be administered particularly to adolescent girls.

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