Normal liver fat content does not exceed 5%, excessive fat deposition in the liver, known as fatty liver. The main causes of fatty liver are: 1, too much fatty acid into the liver long-term high-fat diet, excessive fat intake, causing hyperlipidemia, a large amount of fat into the liver, beyond the processing capacity of the liver, prompting the formation of fatty liver. 2, too little carbohydrate intake too little carbohydrate intake or metabolic disorders, poor utilization, or increased secretion of corticosteroids, or long-term use of corticosteroid drugs will promote increased fat mobilization of the body, a large number of fatty acids into the liver to cause fatty liver. Triglycerides are mainly combined with apolipoproteins and delivered to the blood in the form of lipoproteins. When hepatocyte lipoprotein synthesis is reduced, triglycerides cannot be exported effectively and fatty liver is formed. The common causes include decreased ATP levels and damage to the endoplasmic reticulum in the rough surface of hepatocytes, which reduces apolipoprotein synthesis; lack of essential fatty acids and choline in the body, which reduces the synthesis of phospholipids in the liver and affects lipoprotein synthesis; and decreased liver function, which causes impairment in the binding of triglycerides to apolipoproteins. Increased formation of triglycerides in the liver or reduced oxidation also increases the amount of triglycerides in the liver. 3, choline intake is too little dietary choline and protein in choline, methionine and cystine is conducive to triglycerides into phospholipids, thus promoting the accumulation of fat in the liver to reduce, accelerate the removal of fat from the liver. When lacking in food, it can make fat accumulate in the liver and form fatty liver. 4, vitamin deficiency in food long-term lack of respiratory chain or fat oxidation-related vitamin class, such as riboflavin, nicotinic acid, etc., can block the fat oxidation and cause fatty liver. 5, too much alcohol intake too much alcohol intake can also cause fatty liver, mainly because of the direct damage to the liver by acetaldehyde, an intermediate product of alcohol. When alcohol enters the liver cells, it is first transformed into acetaldehyde under the action of ethanol dehydrogenase and microsomal ethanol oxidation system, and then acetaldehyde is changed into acetic acid. During this process, coenzyme I (NAD) is continuously transformed into reduced coenzyme II (NADH). When NAD decreases, NADH increases and the normal ratio of both decreases, the mitochondrial trihydroxy acid cycle is inhibited, which leads to weakened fat oxidation and increased fatty acid synthesis in the liver, exceeding the processing capacity of the liver and forming fatty liver. The clinical manifestations of fatty liver include loss of appetite, nausea, fatigue, and epigastric fullness after eating. Mild enlargement of the liver and pain in the liver area. Dietary treatment principles of fatty liver nutritional treatment is mainly to control the total energy and the intake of fat, carbohydrate and other nutrients to avoid excessive deposition of fat in the liver. 1.Foods with high protein, proper energy and carbohydrate, low fat and sufficient vitamins should be supplied. 2.For patients with normal weight and light physical labor, supply 126KJ (30kcal) of energy per kg of body weight per day; for overweight patients, supply 71~105KJ (17~25kcal) per kg of body weight per day to make weight loss gradually and facilitate the recovery of liver function. 3.Protein 80~100g per day, higher protein can promote the recovery and regeneration of liver cells, as well as increase the amount of plasma protein. 4.Fat supply should be 35~50g per day, and it is better to supply vegetable oil with high amount of unsaturated fatty acid. 5.Carbohydrates should be 200-300g per day. A diet high in carbohydrates is an important cause of obesity and fatty liver, so patients with fatty liver should be given a low-carbohydrate diet, and sucrose and fructose should be prohibited. 6, salt intake to 5-6g per day is appropriate. 7.Drinking alcohol and alcoholic beverages are strictly prohibited. Food selection of appropriate food: 1, according to the condition of patients with fatty liver given low-carbohydrate low-fat soft meal diet, or fatty liver low sugar low-fat semi-fluid diet. 2.Food preparation should choose foods with high protein and low fat such as chicken, fish, shrimp, rabbit and other meat foods, staple foods should be matched with coarse and fine, more fresh vegetables, fruits and algae to increase the supply of vitamins and minerals. Carbohydrates are mainly supplied by cereals. Foods not suitable for use: 1, animal offal, brain and other foods with high cholesterol content. 2, sweets and sweet snacks. 3, wine and alcoholic beverages. Recipe examples fatty liver low sugar low fat recipes (three meals a day) breakfast rice porridge a bowl (stalk rice 50g), a steamed bun (rich flour 50g) boiled egg a Chinese rice bowl (stalk rice 100g), white chopped chicken 200g, green vegetables 200g, tomato and egg soup (tomato 75g, egg 1, soybean oil 5g, salt moderate afternoon point apple a dinner steamed bream (bream 250g (salt moderate), fried bean seedlings (bean seedlings 150g, soybean oil 10ml, salt moderate) rice (stalk rice 100g) energy 7.76MJ (1854kcal) protein 91.4g fat 58.6g carbohydrate 240.3g