Eat not fat, eat a lot of farting may be a normal physiological phenomenon, chronic gastritis, hyperthyroidism and other causes, can be life management and drug treatment and surgical treatment. 1. Normal physiological phenomenon: Eating not fat and eating a lot may be related to genetics, exercise and other reasons; farting may be related to catching a cold, taking cold food and soy products and other gas-producing food. The above reasons are normal physiological phenomena. You can pay attention to keep your abdomen warm and take less cold and gas-producing food. 2. Chronic gastritis: Chronic gastritis may lead to indigestion, which reduces the absorption of nutrients and gives rise to the symptom of farting. You can take omeprazole, pantoprazole and other drugs to inhibit the secretion of gastric acid; you can also take bismuth potassium citrate, aluminum sulfate and other drugs to protect the gastric mucosa. 3. Hyperthyroidism: Hyperthyroidism may lead to increased basal metabolic rate and increased gastrointestinal motility, which may lead to the symptoms of eating fat and farting. You can take methimazole, propylthiouracil and other drugs to treat it; if the drugs are not tolerated or the effect is not good, you can also carry out sub-total thyroidectomy or total thyroidectomy treatment. Eat not fat, eat a lot of farting may also be caused by other reasons, it is recommended to consult a doctor in a timely manner to find the cause under the guidance of the doctor for treatment. The medication should be used under the guidance of a professional physician, and should not be used arbitrarily on its own.