Influence of surgical treatment of obesity on the course of nonalcoholic fatty liver disease

Non-alcoholic fatty liver disease (NAFLD) is a liver disease with a characteristic accumulation of fatty inclusions in hepatocytes and includes a spectrum of liver lesions from steatosis to cirrhosis. In view of the increasing incidence of obesity and associated NAFLD, a search is underway for optimal treatments. The authors analyzed published clinical studies on the effect of bariatric surgery on morphological changes in the liver. The literature was searched for the keywords «non-alcoholic fatty liver disease», «obesity», «bariatric surgery» in Pubmed databases and еLibrary.ru for the period from 1990 to 2022 . Both the positive effects of surgical treatment of obesity in the form of a decrease in steatosis, steatohepatitis of the liver, and adverse effects in the form of aggravation of cirrhosis in patients after surgery are considered. Despite the obvious effectiveness of bariatric surgery in relation to the components of the metabolic syndrome associated with obesity, there is still no unambiguous opinion about their effectiveness in relation to NAFLD.