Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 47 3 2009 06 15 209 214 EN Mehrdad Shakiba Department of Pediatric Nephrology, Shahid Sadoughi Hospital, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Zahra Nafei Department of Pediatric, Shahid Sadoughi Hospital, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Mohammad Hassan Lotfi Department of Clinical Epidemiology, Shahid Sadoughi Hospital, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Ahmad Shajari Department of Pediatric Nephrology, Shahid Sadoughi Hospital, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. 2015 09 28 Vitamin D is essential for growth and vitamin D deficiency is important issue in adolescent girls as they have a limited rapid growth period .This cross sectional study was done on 167 female students in secondary guidance school in 2006. Growth Parameters, taking supplementary vitamin D, using sunscreen creams and the type of housing and their avoidance from exposure to sunlight was recorded. Symptoms such as weakness, muscle pain, cramp and early fatigability were asked. 25-Hydroxyvitamin D was measured by RIA method, level less than 20ng /ml was considered as deficiency and less than 8ng/ml as sever deficiency. Study showed only 67 girl(40%) have normal vitamin D level,60% suffered vitamin D deficiency (95% CI 52.3-67.5) and 21% out of them suffered sever deficiency (95% CI 14.8- 27.2).No correlation existed between vitamin D level and BMI in our students.There was a correlation between taking supplementary vitamin D and the serum level of 25-Hydroxyvitamin D (P 0.05) Present study showed that despite the fact that Yazd is a sunny city most of the days even in winter; prevalence of vitamin D deficiency among growing female is concerning and requires preventive interference. https://acta.tums.ac.ir/index.php/acta/article/view/3577 https://acta.tums.ac.ir/index.php/acta/article/download/3577/3553