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Korean J Med > Volume 86(4); 2014 > Article
The Korean Journal of Medicine 2014;86(4): 399-404.
비알코올 지방간 질환의 역학
정고은, 김동희
서울대학교병원 강남센터 소화기내과
Epidemiology of Nonalcoholic Fatty Liver Disease
Goh Eun Chung, Donghee Kim
Division of Gastroenterology, Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
Corresponding Author: Donghee Kim ,Tel: +82-2-2112-5632, Fax: +82-2-2112-5635, Email: messmd@chol.com
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
ABSTRACT
Nonalcoholic fatty liver disease (NAFLD) is recognized as the most common liver disease with an estimated prevalence of 20-30% in the Western world and 16-33% in Korea. NAFLD encompasses a broad spectrum of hepatic dysfunction ranging from nonalcoholic fatty liver (NAFL) to nonalcoholic steatohepatitis (NASH), cirrhosis, and hepatocellular carcinoma. The increasing prevalence of NAFLD is particularly worrying because patients appear to have higher non-liver-related and liver-related death, as compared to the general population. Given its well-known association with metabolic comorbidities, NAFLD is commonly associated with obesity, type II diabetes, dyslipidemia, and metabolic syndrome. The natural history of NAFLD remains unclear due to its indolent clinical course and the lack of well-designed prospective studies. The prognosis of NAFLD depends on the histological subtype, while NASH may be associated with liver fibrosis and cirrhosis and may progress to hepatocellular carcinoma. The overall and liver-related mortality are increased in patients with NASH, as compared to NAFL and the general population. NAFLD is strongly associated with cardiovascular disease and type 2 diabetes, so it should also be considered a metabolic liver disease. Further long-term studies of the natural course of NAFLD are warranted. (Korean J Med 2014;86:399-404)
Keywords: Nonalcoholic fatty liver disease; Steatohepatitis; Prevalence; Risk factor; Natural history
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