In this era of cancer, we all do something to “prevent cancer” in one way or another. When there are reports that radiation may cause cancer, we immediately put on anti-radiation clothing before using computer; when it is said on TV that overnight vegetables contain carcinogenic substances, we do not keep all the leftover vegetables at home; when we hear others say that eating what food can kill cancer cells, we will unconsciously buy and eat it often …… In fact, cancer-causing factors can be said to be everywhere in our life, so we should take cancer prevention measures. But in the process of cancer prevention, we should not neglect the protection of our immune system to protect us from cancer, and cancer prevention should start from taking care of our immune system. We all have cancer cells in our body – immune function can effectively remove cancerous cells in our body: we all have mutated cancer cells in our body every day? This may be a “shock” to many readers. Normal people produce some abnormal mutated cells every day. Those who have had cancer checkups will notice that almost all tumor markers are not “zero”, but have a normal range for this reason. Cancer cells are produced every day, but it does not mean that you will get cancer, because our body’s normal immune system can remove these cancer cells in time and effectively. Prof. Jianchuan Xia introduced a very interesting experiment, which injected a kind of cancer cells into the body of normal adults, and it did not develop into cancer, which indicates that there is a natural anti-tumor immunity in the body of healthy adults; however, when such cancer cells are injected into the body of cancer patients, these cancer cells can develop into malignant tumors, which indicates that cancer patients have lost this natural anti-tumor immunity. This indicates that cancer patients have lost this natural anti-tumor immunity, suggesting that the immune function of the body is closely related to the occurrence of cancer. The immune system is the defense organ of the human body, and the immune active cells produced by the immune system form the “defense force” to defend the human body from external or internal “enemies”. External “enemies” include viruses, bacteria, fungi and other harmful pathogens; internal “enemies” are mainly abnormal cells with mutations. The work flow of the “defense force”: first a small number of “reconnaissance troops” to find the invading “enemy”, and then the “enemy “information to the “barracks” of the “defense force”, which generates a large number of “combat troops The “barracks” generate a large number of “combat troops” that rush over to destroy the “enemy”. Seldom catch a cold does not mean no cancer – poor immune function will miss cancer cells: Every week in the clinic, he has to read their “cancer verdict” to many patients. “How can I have cancer? I’m usually in good health, I don’t catch a cold all year round, and I haven’t been hospitalized for more than 10 years!” When many patients learned that they had cancer, they could not accept it. They thought they were in good health and therefore could not have cancer. It is because he has come into contact with so many such patients that Dr. Chen Zhenguang, the chief physician, has been very concerned about the relationship between immunity and cancer. He told reporters that many people think that people who have frequent colds and poor health should be more prone to cancer, but in fact, it is not necessarily so. Some studies show that when people have a cold (mostly bacterial or viral infections), it is an opportunity to stimulate the function of the immune system. And after a viral infection, once the immune system realizes that the virus has invaded, it will mobilize to destroy these invading viruses, and so the “cold symptoms” that make us feel all sorts of uncomfortable will occur. If you get a cold (infected by a virus) and don’t react to it, it may not actually be a good thing, it may mean that this immune system of yours is not so sensitive to the invading virus. When the immune system is not that good, it cannot recognize the cancerous cells (cancer cells originate from normal cells in the body and are very similar to normal cells; moreover, cancer cells will produce some camouflage, such as glycoproteins or mucopolysaccharides, to wrap themselves up or make it more difficult for the immune system to recognize cancer cells by changing the immune monitoring points), so that the cancerous cells become a leaky fish; even if they are recognized, the immune system cannot eliminate Even if they are recognized, the speed of the immune system in eliminating cancerous cells cannot catch up with the increase of cancer cells, and may allow the missed cancer cells to have a chance to develop into cancer. Of course, in some cases, the immune system functions normally, but the cancer cells are too cunning to escape the surveillance of the body’s immune system and will develop into cancer after a period of proliferation. Taking care of immune function starts from daily life – depressed emotions and lack of sleep are immune killers: many readers may be concerned about what I can do to prevent my immune function from declining. Prof. Jianchuan Xia introduces that the immunity of human beings inevitably decreases with age after adulthood, especially after the age of 50, which is one of the important reasons why the risk of cancer increases significantly after the age of 50. In daily life, people over 50 years old often have old people and young people under them, and at the same time, they are burdened with heavy life and work pressure, which often lead to physical and energy overdraft and easily cause the decline of the body’s immune function. The age factor is something that none of us can avoid. But other than that, there are still many things we can do about it. Dr. Chen Zhenguang, chief physician, suggests that a healthy lifestyle and good psychological quality are crucial to enhance the immune function of the body. For example, frequent late nights, long-term sleep deprivation, mental depression and poor rest may cause a decline in immune function, providing opportunities for cancerous cells to escape the surveillance of the immune system and easily lead to the occurrence of cancer. Therefore, we should develop good living habits, pay attention to dietary hygiene, take part in some suitable physical exercises and maintain a good state of mind to enhance our immunity to the best state, which plays an important role in preventing and controlling the occurrence of tumors. 1.Sweat for 30 minutes every day This is the most affordable way to prevent cancer. You don’t need to develop 6-pack abs or run marathons, just exercise 30 minutes a day, 5 days a week. Walking, dancing, cycling, climbing stairs, all kinds of exercises can be done. 2, drink tea or coffee drink tea to help prevent cancer has long been confirmed. Because green tea contains catechins and vitamins A, C and other antioxidants with cancer prevention effects, these cancer prevention ingredients green tea contains the most, followed by oolong tea, black tea. Coffee can also reduce the incidence of certain cancers. The United States, Canada and Japan each have the latest research found that coffee can help reduce the probability of liver cancer, kidney cell cancer, breast cancer and colorectal cancer in women. It is recommended that children before the age of 6 should consume 5 servings of fresh fruits and vegetables every day; school children, teenage girls and female adults over the age of 6 should eat 7 servings of fruits and vegetables every day; and teenagers and male adults should consume 9 servings of fruits and vegetables every day. One serving of vegetables is about 100 grams of raw weight, and about 150 grams of fruits. The daily intake of vegetables should be more than 1 serving of fruit. 4, less salt, do not drink sugary drinks daily intake of salt not more than 6 grams, drink less sugary drinks, drinking plain water is ideal, natural fruit juice not more than 150ml per day, and do not eat moldy cereals and legumes. Many people who develop cancer look back on the first two or three years of the disease, often in a state of high physical and mental stress. Medical research has found that mental stress and long-term negative emotions can reduce immune function, and depression can reduce the body’s ability to repair DNA and increase the probability of developing cancer.