en Urology and Nephrology Urology and Nephrology Original Research Original Research <strong>Background: </strong>Zinc deficiency can increase the risk of infectious diseases. Given that recurrent urinary tract infection is a common complication, this study examines the association between serum zinc levels and recurrent urinary tract infections.<br> &nbsp;&nbsp; <strong>Methods: </strong>In this case-control study, serum zinc levels for 48 patients with recurrent urinary tract infections were compared with the serum zinc levels of the same number of people in the control group who were matched in terms of location and age. Using SPSS ver. 18, univariate analysis was performed through t-test, correlation coefficient; and multivariate analysis was carried out through multiple regression tests. Significant level was considered as less than 0.05.<br> &nbsp;&nbsp; <strong>Results:</strong> There was a weak correlation between age and serum zinc level (r=-0.205, p=0.045). Mean serum zinc level of the test group and the control group were 96.83 (&plusmn;11.25) and 76.72 (&plusmn;17.06) microgram/deciliter (p=0.001), respectively. Level of zinc reduced with aging; in addition, the group with recurrent UTIs had lower zinc levels than the control group (p=0.010, R²=0.377).<br> &nbsp;&nbsp; <strong>Conclusion:</strong> According to the results of this study, serum zinc levels of people with recurrent urinary tract infections were lower than that in the control group. It seems that zinc levels are a risk factor for recurrent urinary tract infections. Urinary tract infection, Micronutrients, Zinc, Recurrent infections, Nutrition 199 201 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-4422-1&slc_lang=en&sid=1 Behzad Mohsenpour behzadmohsenpour@yahoo.com 200319475328460062752 200319475328460062752 No Zoonoses Research Center & Department of Infectious Diseases, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Amjad Ahmadi microbiology90@gmail.com 200319475328460062753 200319475328460062753 Yes Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Anvar Mohammadi Baneh ahmadi.nader68@gmail.com 200319475328460062754 200319475328460062754 No Department of Internal Medicine, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Katayoon Hajibagheri hajibagherikatayoon@gmail.com 200319475328460062755 200319475328460062755 No Zoonoses Research Center & Department of Infectious Diseases, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Ebrahim Ghaderi ebrahimghaderi@yahoo.com 200319475328460062756 200319475328460062756 No Zoonoses Research Center, & Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran Shahla Afrasiabian ahmadi.nader68@yahoo.com 200319475328460062757 200319475328460062757 No Zoonoses Research Center & Department of Infectious Diseases, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran Samaneh Azizi rezaeeit93@gmail.com 200319475328460062758 200319475328460062758 No Students Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran