脂肪肝为常见病，多由肝炎、长期饮酒、肥胖、糠尿病、药物中毒等因素引起的脂肪代谢异常所致。脂肪肝患者多合并内脏脂肪沉积。据调查，中年以上的人群，脂肪肝发病率为8％～13％；其中肥胖者为80％，糠尿病患者约50％合并有脂肪肝。脂肪肝发病初期多无明显症状，有的人可有肝 Fatty liver is a common disease, mostly caused by hepatitis, long-term drinking, obesity, diabetes mellitus, drug poisoning and other factors caused by abnormal fat metabolism. Patients with fatty liver combined with visceral fat deposition. According to the survey, the population of middle-aged and above, the incidence of fatty liver is 8% to 13%; of which 80% of obese people, about 50% of patients with diabetes mellitus with fatty liver. Early onset of fatty liver no obvious symptoms, and some people may have liver