The human body can destroy cancer cells through immune system suppression, but when the cancer prevention ability in the human body is weakened or suppressed, cancer cells will continue to proliferate and form clinically visible cancers. Domestic and international medical communities have confirmed that more than 80% to 90% of human cancers are related to external environmental factors, that is, physical, chemical and biological factors in human living environment are closely related to the occurrence of cancer. Adverse environmental aggressions are buffered or resisted by the body’s protective system, and their effects can be eliminated or diminished. When the cancer-causing factors are too strong or the cumulative effect is too great, and the human body has insufficient immune function or deficiency in body repair function, cancer may occur. At present, environmental pollution is increasing, human living environment is deteriorating, and the contact with cancer-causing factors is getting closer and closer. The stability of human cells can only be relative, and the genetic alteration of human cells is inevitable and unavoidable, but this does not mean that cancer cannot be overcome and people are powerless against it. In fact, there are some cancer cells in each of us, but only very few of them can develop into cancer, and most of them are either removed by the body in time or do not have the ability to divide on their own and remain latent for a long time without harming human health. With the progress and development of medical science and in-depth research on cancer, people have unprecedented understanding of the causes of cancer, occupational tumors can be basically prevented, and certain cancers in general population can be prevented and cured. Modern medicine has recognized that tumor and cancer is a genetic disease, and all cells contain genes that can lead to cell cancer, and these cancer genes are passed from generation to generation. These cancer genes are passed from generation to generation, but they are usually suppressed, and only when the relevant regulatory mechanisms in the cell are disrupted, the cancer genes will “act” and cause cancer to occur. The “kinase” gene family includes more than 500 different genes whose loss of function is a common cause of cancer, and which act as switches to control the growth and death of cells and their mutation process. For cancer patients, many people pay attention to the nutritional status, diet, living habits, age of the person, living environment, etc. all the time, which are actually not very accurate. Whether one gets the disease or not is not only related to the usual living habits, but also closely related to each person’s genes. Some people have more active cancer-causing genes and are prone to get cancer under external influence. Correspondingly, some people’s DNA is easier to repair and have a relatively smaller chance of getting cancer. This explains very well why some people who smoke one cigarette a day get lung cancer and some people who smoke many cigarettes a day do not get lung cancer. Cancer treatment often reminds people of chemotherapy. After one or two sessions of chemotherapy, hair falls out, people’s spirit is poor, and some people will gain weight because of the treatment. Chemotherapy is a very effective method for different kinds of cancer, but from the current research results, it is not applicable to everyone. Some people may not need chemotherapy, but can achieve better results by taking medicine or other methods, which not only can save a large amount of money in medical expenses, but also can minimize the patient’s pain. The “Genetic Cancer Control Formula” regulates cell genes and has unique efficacy in treating cancer.