Not all obese people have fatty liver. Obesity is one of the high-risk factors for triggering fatty liver, and not all obese people have fatty liver. Obesity or a sudden increase in weight within a short period of time, leading to excessive fat storage in the liver, may trigger fatty liver. Obesity is one of the high-risk factors for fatty liver. In addition to obesity, long-term alcohol consumption, diabetes mellitus, hyperthyroidism, and the application of methotrexate are all high-risk factors for fatty liver. It is recommended to maintain a reasonable body weight, eat a light diet and actively participate in physical exercise. If the weight increases sharply in a short period of time, you should consult a doctor as soon as possible to prevent the occurrence of fatty liver; patients with fatty liver should also consult a doctor actively, and be treated as soon as possible under the guidance of a professional doctor.