Many people ask this question: can I get cancer from contact with a tumor patient? The answer is of course not! At present, the causes of cancer are generally believed to be related to heredity, living environment, air pollution, bad habits and so on; however, there is not a single case of cancer because of being “infected” and getting sick. About 10 years ago, I treated a sixty-year-old father Liu, he was diagnosed with laryngeal cancer, after radiation therapy, the tumor was under control. Mr. Liu’s greatest hobby was playing chess, and he had a group of friends who were chess fans. However, after being hospitalized, those friends seldom came to visit him, and even after he was cured and returned home, few people approached him to play chess, and the neighbors were also “distant” from him. Why is this? Only later did father Liu understand that many people around him were afraid of tumor contagion. Tumor cells will only transfer and spread in the same patient’s body through blood and lymphatic channels, but will not be transmitted among different people. This is because tumor cells generally do not actively “run to” the outside of the body, even if the tumor cells are obtained through surgery or puncture, they will die immediately after leaving the nutritional supply in the outside of the body, and will not be infected to others. Unlike infectious diseases such as “tuberculosis” and “hepatitis B”, cancer is not contagious. Oncologists do not normally wear masks to see patients, and oncology patients do not need to be isolated. Therefore, healthy people will never be “infected” with tumor patients, and tumor patients will not infect each other. Ordinary people should not be nervous when they come into contact with tumor patients, and should never alienate and discriminate against cancer patients, so as not to cause mental stress to the patients. Since father Liu around people understand this reasoning will no longer alienate him, chess fans and friends and take the initiative to come to the door and his “fight”, father Liu’s state of mind has obviously improved, every time to the hospital to review the claim that “chess skills have increased greatly”. Because of his good mood, his healing effect is also particularly good. Of course, none of the neighbors and their family members around Father Liu were “infected” with the tumor.