Background: Hypovitaminosis D is common, before and after bariatric surgery (BS). This
study was conducted to determine the status of vitamin D deficiency before and 6 months
after BS. Methods: We performed a retrospective cohort study of 155 patients undergoing
BS. These patients had an average body mass index of 42.5±5.6 kg/m2. Information
regarding demographic characteristics, blood pressure, and anthropometric indices was
acquired through patients' record assessment in the hospital database (IR. sums. med. rec …

Methods: We performed a retrospective cohort study of 155 patients undergoing BS. These
patients had an average body mass index of 42.5±5.6 kg/m2. Information regarding
demographic characteristics, blood pressure, and anthropometric indices was acquired
through patients' record assessment in the hospital database. Results: After 6 months
postsurgery period, serum level of vitamin D was increased significantly from 18.67±11.19 to
24.33±13.25 ng/mL (p< 0.001). Moreover, the results of multivariate regression analyses …