Many times, liver cancer is caused by hepatitis, which is contagious, so is liver cancer contagious? In addition, liver cancer patients always feel weak, why is that? In order to avoid liver cancer, are there any good preventive measures? Is liver cancer contagious? Liver cancer is a common disease in life with high incidence and mortality rate, which seriously threatens the physical health and psychological health of patients and brings financial burden and mental stress to patients and their families. Since some liver cancers are caused by hepatitis, people believe that liver cancer is contagious. Is this really true? Whether liver cancer is contagious or not is a question that bothers many people, because viral hepatitis, such as hepatitis B, which is very familiar to everyone, is very contagious, so people also have great fear of liver cancer, but whether liver cancer is contagious or not. Then we will start from the pathogenic mechanism of liver cancer to understand that liver cancer is a disease of malignant transformation and abnormal proliferation of human cells, and there is no pathogen discharge, so it is not contagious. Moreover, studies have confirmed that people who have close contact with cancer are not more likely to develop liver cancer than those who are not in contact with liver cancer patients. Liver cancer mostly occurs on the basis of hepatitis B. Since hepatitis B can be transmitted through close contact, people who have close contact with hepatitis B can be vaccinated to prevent hepatitis B transmission, which can also prevent liver cancer in a sense. Even in the late stage of liver cancer, it is not contagious, as liver cancer will only be scattered and metastasized to the patient himself, but not to the surrounding people. Liver cancer is the malignant enhancement of the patient’s own cells and is not an infectious source, so advanced liver cancer is not contagious. Why do liver cancer patients always feel weak? The mental lethargy of liver cancer patients is similar to that of chronic hepatitis patients. Due to the continuous expansion of tumor, it causes the disorder of digestive tract function, poor digestion and impaired nutrient absorption, so the patients can suffer from fatigue, weakness, coldness and fear of cold in the limbs, etc. As the disease continues to aggravate, the patients will become more and more emaciated and even cachectic. The calories generated from the food consumed by the body will be absorbed by the intestines, and some of them will be transported to the liver for storage, and then transported to all parts of the body when our collective needs arise. If the liver is attacked by liver cancer cells, then the storage function of the liver will be damaged and the body’s fuel supply will be reduced, so that mental lethargy due to lack of heat energy will occur.