Introduction: Non-alcoholic fatty liver disease (NAFLD) is currently the most prevalent chronic liver disease and the leading cause of elevated liver enzymes, often associated with metabolic syndrome. According to previous research, 25% of the population has NAFLD, and the incidence of this disease is increasing. Objective: The purpose of this study was to examine the relationship between demographic characteristics, components of metabolic syndrome, laboratory findings, and data obtained through the method of electrical bioimpedance (BIA) regarding parameters of steatosis - CAP (controlled attenuation parameter), and fibrosis - LSM (liver stiffness measurement), obtained through transient elastography. Methods: This retrospective study involved 703 patients. We utilized FibroScan® and the method of electrical bioimpedance. Blood analysis was also performed on the patients. Results: Patients with higher values of CAP and LSM had a higher body mass index, larger waist, hip, and arm circumference, greater amount of visceral fat, and a higher percentage and absolute amount of adipose tissue, resulting in a lower percentage of muscle and skeletal muscle. They also had higher levels of uric acid, alanine transaminase (ALT), and gamma-glutamyl transferase (GGT), and lower levels of high-density lipoprotein (HDL). Basal metabolic rate and metabolic age were also higher in these patients. Patients with fibrosis had higher average values of CAP and vice versa. Most patients had at least one disease or feature of metabolic syndrome. Conclusion: Dietary changes, lifestyle modifications, and regular physical activity are always recommended as the first line of treatment due to their numerous beneficial effects on liver health and overall well-being.