Effect of nutrient intake on some biochemical parameters in the first six months after sleeve gastrectomy

Abstract

Aim: The aim of this study is to determine the possible nutrient and protein deficiency in the first six months after sleeve gastrectomy and to determine its effect on some biochemical parameters. Material and Methods: This study is an intervention study including 102 patients (75 female and 27 male) aged between 18-65 years, who had undergone sleeve gastrectomy operation at the General Surgery Clinic of Şişli Florence Nightingale Hospital between 13.07.2017 and 06.01.2018 and been followed up by a dietician for at least six months postoperatively. Anthropometric measurements, three-day food intake, and biochemical parameters were followed pre-operatively and during the first six months. Results: There was a 27.4% decrease in body weight of the patients in first six months after surgery. Both decrease in body weight, and decrease in body fat ratio and body mass index were found statistically significant (p<0.001). A statistically significant difference was found between preoperative and postoperative 6th month biochemical parameters; serum HbA1c, insulin, uric acid, total protein, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglyceride, iron, iron binding capacity, ferritin, zinc, vitamin D, calcium, parathormone, folate and vitamin B12 levels of the patients (p<0.001). The difference between 6th month serum total protein levels of patients using and not using whey protein powder in the first month after sleeve gastrectomy was found statistically significant (p=0.002). Conclusion: It should be kept in mind that regulating patients’ lifestyle with post-operative multidisciplinary team and regular follow-up, and supporting with active life are necessary for obesity treatment to be sustainable.