Obesity is a chronic disease, heterogeneous in etiology and clinical manifestations, progressing in a natural course, characterized by excessive deposition of fat mass in the body [63]. Morbid obesity is a pathological condition in which the body mass index exceeds 40 kg/m2, i.e., body weight is increased by 45-50% of its normal values, and the risk of death of patients is 10 times higher than that of people with normal weight [3;4;34;63].