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.
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 Ddeficiency 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.
Authors: F Ginty; C Cavadini; P-A Michaud; P Burckhardt; M Baumgartner; G-D Mishra; D V Barclay Journal: Eur J Clin Nutr Date: 2004-09 Impact factor: 4.016
Authors: Despoina Giannopoulou; Maria G Grammatikopoulou; Dimitrios Poulimeneas; Maria Maraki; Leonidas Dimitrakopoulos; Maria Tsigga Journal: J Immigr Minor Health Date: 2017-04
Authors: Seham F A Azab; Safaa Hamdy Saleh; Wafaa F Elsaeed; Sanaa M Abdelsalam; Alshaymaa Ahmed Ali; Asmaa M H Esh Journal: Ital J Pediatr Date: 2013-11-15 Impact factor: 2.638