Nausea and vomiting as soon as you eat greasy food may be caused by early pregnancy reaction, gastritis, hepatitis and cholecystitis, which need to be treated according to the causes. Common causes and treatment 1. Early pregnancy reaction: Early pregnancy reaction can be caused by changes in hormone levels in early pregnancy, resulting in gastrointestinal symptoms, such as nausea and aversion to greasy food, which are normal physiological phenomena and do not require special treatment, and the symptoms can be gradually relieved around 12 weeks of pregnancy. 2. The symptoms can be improved by using drugs such as digestive enzymes, aluminum thioglycollate and bifidobacteria to protect the gastric mucosa and regulate the intestinal flora; 3, hepatitis: liver diseases cause damage to liver cells, resulting in reduced production of bile salts and reduced ability to digest fat, thus causing anorexia. The ability of gallbladder to secrete bile becomes poor, and the ability to digest fat is weakened, thus producing anorexia, which is manifested as nausea and vomiting. Can be under the guidance of the doctor oral biliary drugs, such as magnesium sulfate, deoxycholic acid tablets, etc. for treatment. Precautions for nausea and vomiting from eating greasy things, patients are advised to visit a hospital to actively search for the cause and treat the original disease. In addition, in daily life should pay attention to regular diet, do not overeat, three meals a day should be regular and quantitative. Try to eat less spicy and stimulating, cold and greasy food. Eat more easily digestible liquid diet, such as millet porridge, noodles, etc. Exercise properly, ensure sufficient sleep, and avoid eating before bedtime.