Maryam Rafraf1, Saadat Karimi Hasanabad2, Mohammad Asghari Jafarabadi3. 1. 1 Nutrition Research Center, Department of Community Nutrition, Faculty of Nutrition, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran. 2. 2 Students' Research Committee, Faculty of Nutrition, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran. 3. 3 Medical Education Research Center, Department of Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran.
Abstract
OBJECTIVE: To investigate vitamin D status and its association with components of the metabolic syndrome (MetS) in adolescent girls attending high school in Boukan, Iran during winter 2012. DESIGN: A cross-sectional study. SETTING: High schools of Boukan city, Iran. SUBJECTS: A sample of 216 girls aged 14-17 years was selected by multistage random sampling from four districts of Boukan. Weight, height, waist circumference, blood pressure, daily energy intake, physical activity and serum 25-hydroxyvitamin D (25(OH)D), fasting blood glucose, TAG and HDL-cholesterol levels of all participants were evaluated. Serum 25(OH)D level <20 ng/ml was defined as vitamin D deficiency. RESULTS: Mean serum 25(OH)D was 7.26 (sd 2.81) ng/ml and 96 % of the participants had vitamin D deficiency. According to age-modified definitions of the National Cholesterol Education Program Adult Treatment Panel III, MetS was diagnosed in 10.6% of the participants. In multivariable regression analysis after adjustment for BMI, energy intake and physical activity level, serum 25(OH)D was inversely associated with fasting blood glucose (β = -0.143, P = 0.04). No significant relationship was found between serum 25(OH)D and other components of MetS. CONCLUSIONS: The high prevalence of vitamin D deficiency warrants national polices and interventions towards improving this major health problem among adolescent girls. Low 25(OH)D level was significantly associated with increased fasting blood glucose. Prospective studies are needed to determine the effects of vitamin D deficiency on the development of MetS and related metabolic diseases in adolescent girls.
OBJECTIVE: To investigate vitamin D status and its association with components of the metabolic syndrome (MetS) in adolescent girls attending high school in Boukan, Iran during winter 2012. DESIGN: A cross-sectional study. SETTING: High schools of Boukan city, Iran. SUBJECTS: A sample of 216 girls aged 14-17 years was selected by multistage random sampling from four districts of Boukan. Weight, height, waist circumference, blood pressure, daily energy intake, physical activity and serum 25-hydroxyvitamin D (25(OH)D), fasting blood glucose, TAG and HDL-cholesterol levels of all participants were evaluated. Serum 25(OH)D level <20 ng/ml was defined as vitamin D deficiency. RESULTS: Mean serum 25(OH)D was 7.26 (sd 2.81) ng/ml and 96 % of the participants had vitamin D deficiency. According to age-modified definitions of the National Cholesterol Education Program Adult Treatment Panel III, MetS was diagnosed in 10.6% of the participants. In multivariable regression analysis after adjustment for BMI, energy intake and physical activity level, serum 25(OH)D was inversely associated with fasting blood glucose (β = -0.143, P = 0.04). No significant relationship was found between serum 25(OH)D and other components of MetS. CONCLUSIONS: The high prevalence of vitamin D deficiency warrants national polices and interventions towards improving this major health problem among adolescent girls. Low 25(OH)D level was significantly associated with increased fasting blood glucose. Prospective studies are needed to determine the effects of vitamin D deficiency on the development of MetS and related metabolic diseases in adolescent girls.
Authors: A A BinSaeed; A A Torchyan; B N AlOmair; N S AlQadhib; F M AlSuwayeh; F M Monshi; F I AlRumaih; S A AlQahtani; N AlYousefi; A Al-Drees Journal: Eur J Clin Nutr Date: 2015-02-18 Impact factor: 4.016
Authors: Éva Pál; Leila Hadjadj; Zoltán Fontányi; Anna Monori-Kiss; Zsuzsanna Mezei; Norbert Lippai; Attila Magyar; Andrea Heinzlmann; Gellért Karvaly; Emil Monos; György Nádasy; Zoltán Benyó; Szabolcs Várbíró Journal: PLoS One Date: 2018-02-06 Impact factor: 3.240