Minoo Saatian - Department of pathology,Islamic Azad University,Tehran Medical Branch,Iran
Minoo Shafii - Department of pathology,Islamic Azad University,Tehran Medical Branch,Iran
Sepide Bayat - General practitioner

Objective This study was performed to determine the prevalence rate of vitamin-D deficiency in different regions of Tehran which has important implications for general health. Methods In this cross-sectional study 14000 subjects ,6961(49.7%)men and 7039(50.3%) women ,between 20-86 (mean age 53.46)years in 2015-2016 in Tehran were enrolled and the prevalence rate of low 25-hydroxy vitamin-D serum level(less than 20 ng/ml) in different regions(Nikan,Booali and Laleh Hospital laboratories and Mellatlaboratory )was assessed by chemiluminescent immunoassay method with Advia Centaur XP and also the contributory factors for it were determined. Results The result in this study revealed that 7241 subjects(51.7%) had low vitamin D level.The older age,female gender,northern regions and winter season are related to low vitamin-D evel(p=0.0001). Conclusion Totally according to the obtained results in this study,it may be concluded that half of general population in Tehran have low vitamin-D level and it is mandatory to add some amount of vitamin-D in Iranian food regimen.

vitamin D,prevalence,Tehran