脂肪性肝病(fatty liver disease,FLD)简称脂肪肝,是一组遗传-环境-代谢应激相关的异质性疾病,根据病因分为酒精性肝病(alcoholic liver disease,ALD)、非酒精性脂肪性肝病(nonalcoholic fatty liver disease,NAFLD)以及特殊原因所致脂肪肝。ALD的疾病谱包括酒精性脂肪肝、酒精性肝炎及酒精性肝硬化。NAFLD的疾病谱包括单纯性脂肪肝(simple Fatty liver disease (FLD), referred to as fatty liver, is a group of heterogeneous diseases related to genetic-environmental-metabolic stress. According to the cause, fatty liver disease (ALD), non-alcoholic fat Nonalcoholic fatty liver disease (NAFLD) and fatty liver due to special causes. The disease spectrum of ALD includes alcoholic fatty liver, alcoholic hepatitis and alcoholic cirrhosis. The disease spectrum of NAFLD includes simple fatty liver (simple)