en بیوشیمی Biochemistry پژوهشي Research <div style="text-align: justify;"><strong>Background and Aims:</strong> Vitamin D plays an important role in bone health, cardiovascular health, brain development, immune system regulation, mood regulation, and cancer prevention. This study aimed to evaluate the vitamin D status and the prevalence of vitamin D deficiency in Jiroft city, Kerman Province, south of Iran.<br> <strong>Materials and Methods: </strong>In this cross-sectional study, 5243 people were selected by random sampling during 2015-2019.&nbsp; Serum 25 (OH) D level was measured by VIDAS 25-OH vitamin D total testing kits. Levels used for definitions were deficient, D3 < 20 ng/ml; insufficient, D3 20-30 ng/ml; adequate, D3 30-100 ng/ml, and potential toxicity, >100 ng/ml. &nbsp;<br> <strong>Results: </strong>The mean of vitamin D was 26.03 ng/ml and 24.19 ng/ml in men and women, respectively (p=0.003). The prevalence of vitamin D deficiency was 41.55% and 51.7% in men and women, respectively. A significant relationship was seen between age and level of vitamin D (p=0.001).<br> <strong>Conclusions: </strong>The results of our study showed that vitamin D deficiency is common among the general population, especially in women in Jiroft city, Kerman Province, south of Iran. Serious plans are needed to improve the status of vitamin D in the people living in this region.</div> General population, Jiroft, Vitamin D 131 137 http://ijml.ssu.ac.ir/browse.php?a_code=A-10-422-2&slc_lang=en&sid=1 Mohadeseh Kamali محدثه کمالی mehdimycology@yahoo.com No Department of Internal Medicine, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran گروه داخلی، دانشکده پزشکی، دانشگاه علوم پزشکی کرمان، کرمان، ایران Mohammad Shariati محمد شریعتی m_shariatilab@yahoo.com No Jiroft Social Security Clinic, Jiroft, Iran درمانگاه تأمین اجتماعی جیرفت، جیرفت، ایران Mehdi Taheri Sarvtin مهدی طاهری سروتین mehditaheri.mt@gmail.com 0000-0003-3600-9472 Yes Department of Medical Mycology and Parasitology, Faculty of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran گروه انگل شناسی و قارچ شناسی، دانشکده پزشکی، دانشگاه علوم پزشکی جیرفت، جیرفت، ایران