Fat people do not necessarily get fatty liver. Obesity is a predisposing factor for fatty liver. A physical examination of obese people reveals that 72% of them have fat deposits in the liver, causing fatty liver, but there are also a small number of people who do not have fat deposits and do not cause fatty liver. When the body has excess nutrition, the excess nutrition will be converted into fat in the liver, and the fat accumulation under the skin shows as obesity, if the fat accumulation in the liver, it can cause fatty liver. However, if lipid metabolism is normal, it can better metabolize excessive cholesterol and triglycerides, etc., which can also not cause fatty liver. People at risk for fatty liver include long-term heavy drinkers, obesity, diabetes, hyperlipidemia, people with little exercise, drug-related liver injury, and malnutrition, so controlling fatty liver requires dietary control and weight loss, which is the fundamental treatment, and fatty liver can be reversed.