The effect of nutrition on sleeve gastrectomy patients’ weight loss, biochemical measurements, and comorbids: A clinical study

Abstract

Background This study investigates the effect of a nutrition program applied to patients as per bariatric surgery protocol at the sixth month postoperative. The study also compares and contrasts the postoperative findings with preoperative data. Methods Twenty severely obese sleeve gastrectomy patients between the ages of 18–65 participated in the study. Energy requirements were calculated as 22 kcal/ideal body weight (kg/day) and protein requirements as 1.5 g/ideal body weight (kg/day). The study evaluates patients’ anthropometric and biochemical measurements, body mass index, waist circumference, fat mass (%), weight loss (%), excess weight loss (%), comorbids, and dietary habits at the third and sixth months preoperative and postoperative. Patients’ daily macro-micronutrient intake was also calculated. The Friedman Test and Cochran's Q test were performed to determine statistically significant data ( p < 0.05). Results During the first 6 months postoperative, patients lost 34 kg of weight and 16.7% of fat mass, and their percent excess weight loss was measured at 60.2% (<0.0001). Biochemical measurements of the patients revealed that fasting blood glucose, low-density lipoprotein cholesterol, total cholesterol, triglyceride, and calcium levels, which were above the reference range in the preoperative period, were within this range in the postoperative period (<0.0001). Thirteen out of 21 comorbidities, including type 2 diabetes, hypertension, hyperlipidemia, pulmonary problems, and sleep apnea, improved at different rates in the sixth month postoperative. Conclusions Thanks to the nutrition program applied as per bariatric surgery protocol, patients lost weight, and their biochemical measurements and comorbids have improved following sleeve gastrectomy.