AFP is a glycoprotein that normally comes mainly from the liver cells of the embryo. AFP disappears from the blood about two weeks after birth, so the level of AFP in normal human serum is still less than 20 micrograms per liter. So what are the reasons for high AFP? Causes of high alpha-fetoprotein: 1. Liver cancer is one of the common causes of high alpha-fetoprotein. Generally, the level of alpha-fetoprotein in the serum of normal people is less than 20 μg/L, but when liver cells become cancerous, they resume the function of producing this protein, and generally the alpha-fetoprotein is elevated 8 months before the symptoms of liver cancer appear. Therefore, alpha-fetoprotein has certain significance for the early diagnosis of hepatocellular carcinoma of liver. 2, Acute and chronic hepatitis, recovering from severe hepatitis, cirrhosis, congenital bile duct occlusion, malformed fetus, etc. AFP may also appear elevated, but the elevation is smaller and lasts for a shorter period of time. Some patients with gastrointestinal tumors such as pancreatic cancer or lung cancer and germ cell tumors may also have different degrees of elevated alpha fetoprotein. 4.Pregnant women and newborns may also experience a temporary increase in AFP, because AFP is a normal plasma protein component of the fetus and is the main protein of the early embryo. After 3 weeks postpartum, it gradually returns to normal level. In the diet of people with high AFP, we must pay attention to high protein, high vitamin, avoid eating cold and spicy greasy food, eat regularly and rationally, and have reasonable nutrition.