Abstract

Background: Obesity is a big health problem due to its related diseases, so laparoscopic sleeve gastrectomy is one of the bariatric surgeries which have a role in the weight reduction, but it affects the micronutrients concentrations including vitamins D and B12.Aims: To assess concentrations of vitamins D and B12 prior to laparoscopic sleeve gastrectomy and post-surgery in first, third, sixth and twelve months after the surgery by taking blood samples in this scheduled follow up visits.Patients and Methods: This study was carried out in department of surgery at Al-Sadr Teaching Hospital in Basrah, Iraq from June 2016 to June 2017.It include 82 patients from both gender and from different age groups. Detection of Vitamins D and B12 deficiency pre and postoperative periods, in every follow up visits were by taking a samples of blood and statistical calculation of vitamins values.Results: There were no significant differences related to the age groups but there were a significant reduction of both vitamins in relation to sex and time (pre and postoperatively). The deficiency of vitamin D before surgery mean (35.18) which decreased then increased reaching (37.46) in the end of first year post surgery which was a significant P value 0.045, while the deficiency of vitamin B12 prior to surgery which was 51.90 then after surgery decreased then increased reaching 51.58 by the end of first year post surgery which was non-significant P-value 0.490 (P value < 0.05 significant).Conclusions: This study determined the presence of deficiencies of both vitamins D and B12 before and after laparoscopic sleeve gastrectomy during first year post surgery, so it is recommended for giving vitamin D prior to surgery, while vitamin B12 was not given.