Abstract
Background Obesity is a global healthcare problem, and nonalcoholic fatty liver disease (NAFLD) is a commonly observed comorbid disease in the bariatric population. This study evaluated the relationship between NAFLD and various risk factors, including demographic, biochemical, and comorbid conditions in patients undergoing laparoscopic sleeve gastrectomy (LSG). Material and methods This retrospective data analysis study included patients who underwent LSG between August 2023 and 2024. Patient demographic data were collected, such as age, gender, weight, and body mass index (BMI), and NAFLD grade was determined by ultrasonography. Biochemical markers were recorded, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol, triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), fasting blood glucose (FBG), HbA1c, and vitamin D. The presence of type II diabetes mellitus (T2DM) and hypertension (HT) was evaluated and compared with the grade of hepatosteatosis. Results The study included 436 patients, of whom 73.6% (n = 321) were female. The mean age was 37.23 ± 10.49 years, and the mean BMI value was 41.25 ± 6.11 kg/m(2). Patients were classified and compared according to their NAFLD grade, revealing statistically significant differences in weight, BMI, ALT, AST, HDL, LDL, TG, total cholesterol, HbA1c, FBG, vitamin D, obesity class, DM, and HT (p < 0.05). HDL and vitamin D showed an inverse correlation with NAFLD. We observed no significant difference in the relationship of NAFLD with age and the presence of gallstone. Logistic regression analysis revealed that ALT, AST, LDL, total cholesterol, and FBG were statistically significantly associated with NAFLD in the multivariate model. Conclusion Hepatosteatosis, T2DM, and HT are frequent comorbid diseases that are common in bariatric patients. Our study shows that ALT, AST, LDL, FBG, and total cholesterol may be used as predictors of NAFLD.