Fatty liver is the accumulation of fat in the liver cells caused by various reasons. Under normal circumstances, the fat content of the liver accounts for 3-5% of the total weight of the liver, and generally does not exceed 5%. If the fat content of the liver exceeds 5% of the total weight of the liver, the clinical term for this is fatty liver. When fatty liver is found during physical examination, there are many causes, mainly: 1. bad lifestyle 2. alcohol consumption Long-term alcohol abuse is the first killer of liver damage. This is because alcohol enters the body, mainly in the liver for decomposition and metabolism, the toxicity of alcohol to liver cells so that the breakdown of fatty acids and metabolism of liver cells is impaired, causing fatty deposits in the liver caused by fatty liver. The more alcohol you drink, the more serious the fatty liver. 3, excess nutrition Long-term intake of excessive animal fat, vegetable oil, protein and carbohydrates, in the body can not be fully utilized, excess nutrients will be converted into fat storage, resulting in obesity and fatty liver. The “mouth blessing” into a disaster caused by excess nutrition, so that fatty liver and obesity come together. 4, obesity obesity is a common cause of fatty liver. Due to the lack of exercise, socializing and socializing, excessive drinking, uncontrolled diet, excessive calorie intake, resulting in the body can not be consumed, resulting in obesity, body fat accumulation in the liver to form a fatty liver. 5, malnutrition Not thin people will not get fatty liver, long-term malnutrition, lack of protein and vitamins, can also cause nutritional deficiency fatty liver. 6, viral hepatitis Viral hepatitis due to damage to liver cells, the metabolic function of the liver decreased, the liver on the breakdown of fat metabolic disorders, resulting in the accumulation of fat in the liver cells to form a fatty liver. 7, in addition, diabetes, hyperthyroidism, severe anemia and other chronic diseases can also cause fatty liver.