1Department of Clinical Research, Pasteur Institute of Iran, Tehran, Iran
2Obesity Treatment Center, Department of Surgery, Shahed University, Tehran, Islamic Republic of Iran
3Shahed University, Medical faculty, Department of Anatomy & Pathology
4MSc of Genetic, Genomics Department of Ana Gen Biotech., Co Ltd
5MSc of Biotechnology, Genomics Department of Ana Gen Biotech., Co Ltd
6Medical Student of Kazan University of Medical Sciences, Kazan, Russia
7Genomics Department of Ana Gen Biotech., Co Ltd. t.alishiri@yahoo.com
8APCP, Department of pathology, School of medicine, Kashan University of Medical Sciences, Kashan, Iran
9MSc of Genetic, Genetics Unit of Shafagh Pathobiology Laboratory, Tehran, Iran
10Assistant Professor of shahid beheshti University of Tehran, Loghman Hakim Hospital
*Corresponding Email: shafaghlab.ir@gmail.com
Online published on 3 October, 2018.
Vitamin D deficiency is very frequently observed among young women. Vitamin D deficiency is high in winter because of reduced exposure to sunlight. The main objective of this study was to Assessment 25-hydroxyvitamin D level in Iranian young women in winter and summer. In this cross-sectional study, 4212 men and women_ aged 20 to 35 years, who attended a single-consultation outpatient clinic, were selected. Who participated in this study toward the end of summer, and in winter Serum 25-hydroxy vitamin D (25-OHD) concentrations were measured. T test and X2 were used for data analysis. 4200subjects (66.4% women, 33.6% men) aged 20 to 35 (mean age ± SD 27.11± 12.6) participated in the study. The mean 25-(OH) D concentration in summer was 13.41 ± 13, and in winter it was 11.7 ± 11, and the difference was statistically significant (p< 0.02). The prevalence of 25-(OH) vitamin D deficiency was 87.7% in winter and 78.7% in summer (p < 0.05). Low vitamin D status among Young Men and Women during two consecutive winter seasons, improved vitamin D status during the summer was found. Serum 25(OH)D was strongly associated with parameters related to sun exposure, but only weakly with intake of vitamin D supplements.
25-Hydroxyvitamin D, vitamin D status, seasonal variation
