Liver cancer refers to malignant tumors occurring in the liver, including primary liver cancer and metastatic liver cancer, and people mostly refer to primary liver cancer when they talk about liver cancer in daily life. Primary liver cancer is one of the most common malignant tumors in clinical practice, and according to the latest statistics, there are about 600,000 new liver cancer patients worldwide every year, ranking fifth among malignant tumors. So how to prevent liver cancer? Now we will introduce some methods to prevent liver cancer: 1. Hepatitis prevention: Using hepatitis vaccine to prevent hepatitis and thus liver cancer has become one of the most promising ways to prevent liver cancer. This can stop some of the hepatitis from developing into liver cancer. 2. Quit drinking: Alcohol in the human body needs to be detoxified by the liver, the body’s largest chemical plant. The acetaldehyde produced in this metabolic process is extremely toxic to human body, which can lead to cell damage, fat deposition in liver cells, inflammatory necrosis of liver cells and proliferation of fibrous connective tissue, which can eventually lead to liver cirrhosis, and part of cirrhosis can be transformed into liver cancer. 3.Avoid overwork: Excessive mental or physical labor can not only lower the resistance of liver cancer patients, but also aggravate the damage of liver function and lead to the deterioration of the disease. 4. Regular physical examination: Patients suffering from chronic hepatitis B or C are 10-30 times more likely to develop liver cancer than normal people. If hepatitis is well, but the damage of hepatitis virus to liver does not disappear, that is to say, the basis of cancer still exists, so regular checkups should be conducted. For people over 35 years old who are positive for hepatitis B surface antigen, have chronic hepatitis and cirrhosis for more than 5 years, and have family history of liver cancer in three generations of immediate family members, testing for methemoglobin and liver ultrasound every six months is the most effective method for early detection of liver cancer. 5.Actively exercise and strengthen immunity: The occurrence of liver cancer is also related to the immunity of the body. Under normal circumstances, cells in human body may form cancer cells, but the immune system of human body has the ability to remove these cells, so that cancer does not occur in human body. When the body’s immunity is weakened, cancer is likely to occur. Hepatitis B patients should have good living habits and keep optimistic emotions, which can enhance physical fitness, improve body immunity and prevent the occurrence of liver cirrhosis and liver cancer. 6, away from carcinogens, eat more cancer prevention food: do not eat moldy, paste food, such food contains substances such as aflatoxin is carcinogenic. Frequent consumption of moldy food is very likely to cause liver cancer. Eat more foods to prevent cancer in daily life. Food plays an important role in cancer prevention, but researchers suggest that vegetable and fruit foods can effectively reduce the chance of many types of cancer, especially colon cancer. Specific dietary guidelines are: consume no more than 4 ounces of red meat per day on average, avoid processed meats such as sausage and smoked sausage, eat a variety of non-starchy vegetables and fruits at least five times per day. Minimize the consumption of sugar-sweetened beverages, fruit juices, after-dinner desserts and candy, and eat less refined bread, bagels (doughnuts that are steamed and then baked) and fried potato chips. Effective measures to prevent liver cancer include, in addition to the above, emotional control. Over the years, clinical observation shows that if patients are in a state of low, irritable and worried mood for a long time, it can lead to the deterioration of the disease. Therefore, patients should learn to control their emotions in general to avoid aggravation of the disease.