I. Current Situation of Tumor Incidence From August 18 to 21, 2010, the 21st World Cancer Congress organized by the International Union Against Cancer was held in China for the first time, with 3,000 delegates from 94 countries and regions around the world attending. In his speech at the Congress, Minister of Health Chen Zhu said that cancer has become the number one cause of death among urban and rural residents in China. The incidence of cancer in China is on a rapid rise, with about 2.6 million cancer cases and 1.8 million deaths each year. The current cancer spectrum in China has combined the epidemiological characteristics of cancers in both developing and developed countries, with lung, liver, stomach, esophageal and colorectal cancers, being the five most common cancer killers. The mortality rate of cancer patients in rural areas is significantly higher than that in urban areas, while the high incidence of cancer is mostly concentrated in western and rural areas. Causes of tumors (a) External factors: 1. Physical carcinogenic factors, such as radiation (can induce leukemia, skin cancer, bone sarcoma, etc.), long-term thermal radiation (can induce skin cancer and soft tissue tumors), long-term mechanical stimulation (can lead to tongue cancer and lung cancer), etc. 2.Chemical carcinogenic factors, common carcinogenic compounds such as polycyclic aromatic compounds and inorganic compounds such as arsenic, asbestos, chromium and nickel, etc. Nitrosamines are also very strong carcinogens. Biological carcinogenic factors mainly refer to viruses and fungi (molds). It is believed that papilloma virus (HPV) is closely related to the occurrence of cervical cancer, hepatitis C virus (HCV) and hepatitis B virus, heterochromatic mycobacteria can cause liver cancer, Fusarium can induce gastric cancer and pancreatic cancer and brain tumor, and Helicobacter pylori infection is related to gastritis and gastric ulcer and gastric cancer. 4, environment, water pollution, bad living and eating habits, such as the Pearl River Delta people like to eat salted fish, the incidence of local nasopharyngeal cancer is high; Henan Lin County love to eat hot porridge, Shandong Yimeng mountains love to eat hard pancakes, long-term stimulation of the esophagus, and caused by esophageal cancer; long-term smoking caused by lung cancer, etc. (2) Internal factors: 1) genetic factors, such as colon cancer, breast cancer, leukemia, etc. caused by the interaction between environment and genetics; 2) mental factors, such as depression, isolation, impatience, irritability, inability to comfort oneself from grief, inability to relieve oneself from blows, long-term mental tension and other emotional changes, as well as overexertion, can contribute to the occurrence of cancer. Many patients’ families worry that cancer is hereditary, but researchers believe that the occurrence of cancer is mainly the result of the combined effect of genetic and environmental factors, and the number of tumors directly caused by genetics is very small. Traditional Chinese medicine health care aims to maintain life in order to strengthen body, health and life. The traditional Chinese medicine health care theory involves many aspects such as diet, daily living, spiritual care, exercise, medicine and qigong. In the Yellow Emperor’s Classic of Internal Medicine, it is said that “the ancient people, who knew the law of yin and yang, and the art of number, eating and drinking in moderation, living in a normal manner, and not making delusional labor, were able to be in shape with the gods, and end their natural life, and go away at the age of 100 years.” The causes of tumor occurrence have been mentioned earlier. Therefore, the prevention of cancer should start from the most basic daily life, and the theory of Chinese medicine health care contains many relevant contents. In the process of health maintenance, we must pay attention to the maintenance of the righteousness, as the saying goes, “If the righteousness exists inside, the evil cannot dry up”. According to the theory of TCM, tumor is based on “internal deficiency” and the interaction of various pathogenic factors, resulting in the imbalance of yin and yang of the body, the dysfunction of qi and blood in the internal organs, the agglomeration of pathological products, and finally the qualitative change, whose overall characteristic is “the whole body is deficient, the local is real”. Generally speaking, the adequacy of positive energy is the dominant factor in the occurrence of tumor. Specifically, the principles of health maintenance mainly include the following aspects: (a) Adapt to the laws of nature The things in the natural world show the laws of spring growth, summer growth, autumn harvest, and winter storage, so people should conform to the changes of climate, yin and yang in the four seasons. For example, in winter, the body’s qi and blood convergence, more suitable to take some ginseng, gum and other tonic drugs. Because the body’s qi and blood are hidden inside in winter, the nourishing products taken can be transported and transformed to prepare for the next spring. Similar tonic is not suitable for summer, because in summer the body’s qi and blood floats and spreads, and the body is deficient, not to mention eating tonic drugs, even shabu-shabu lamb is difficult to absorb. As the saying goes, “spring covers autumn freezes”, which is in line with the theory of health care. The temperature gradually drops in the early autumn season, if too much clothing too early, the fire and heat accumulated in the body in the summer can not be well dispersed, may cause discomfort, or in the next spring and summer when external factors induced touch for disease, so to “autumn freeze”. The reasoning behind “spring cover” is similar to this, but of course the premise is to be moderate and not forced, with the principle of “no injury, no strength”. The elderly are mostly weak and lacking in vitality, which is not applicable. (B) strengthen physical exercise This aspect is familiar to everyone, physical exercise can promote the flow of blood, so that the muscles and bones strong, visceral health. It should be stressed that exercise should be “combined with work and rest, perseverance” as the main point. Different people have strength and weakness, physical strength has the size, labor or exercise according to their actual situation, according to their strength, do not overexert, exercise should also be appropriate, to rest a little after the body can recover as appropriate, that is, “but want to small labor” and “form labor and not tired “for the degree. Everything a reason, anything you want to succeed, are valuable in persistence, perseverance. Adhere to a long-term regular exercise, not only for the body is very beneficial, but also to develop perseverance, exercise the mind. In addition, an important aspect of the combination of work and rest is to maintain adequate sleep. Cultivating good sleep habits is the basic element to improve the quality of sleep, to insist on going to bed on time, waking up that is, in the long run will form a conditioned reflex, enhance the effect of sleep. （Improper diet is another important factor to cause tumor. Moldy and barbecued foods contain carcinogenic toxins, so it is advisable not to eat or eat less. The principle of reasonable diet is “diet in moderation”, not only to pay attention to the meat and vegetables, to avoid over-eating the thick taste, but also to overcome bad eating habits. Some people like to eat too fast, easy to give the spleen and stomach to increase the burden; eat too hot, too hard to damage the digestive tract, easy to cause malignant changes. Dietary partiality, that is, partiality to salty, spicy, sweet, cold, etc., are not good for the human body. In particular, we need to emphasize the prevention of hunger and satiety disorders, especially dinner should be a small amount. Because the evening sunset, Yang decay and Yin Sheng, the human yin and Yang then change, the spleen and stomach transport function is weaker than noon, if the intake of too much food, one is to increase the burden, “diet since the times, the stomach is hurt”, the second is the slow metabolism of the human body in the evening, not only poor absorption of nutrients, energy is not easy to consume, into phlegm and dampness accumulated in the body, so that the body is fat, become born Other diseases. Experts suggest to develop a healthy recipe of plant-based and animal-based, including 300 grams of cereals (one third of which is beans and one third of which is flour); 500 grams of vegetables, of which 300 grams must be leafy greens; 200 grams of animal-based foods, such as fish, poultry, eggs and lean meat; 250 grams of milk; and 50 grams of soybean products per day. In addition, dietary therapy can be used to properly supplement antioxidant nutrients, such as VC, carotene, more seeds containing VE, plant active substances, hard-shelled foods and Dauphine tea, hawthorn of yellow tungsten, wolfberry, ginkgo, soybean, mushroom of Ganoderma lucidum, etc. The exchange can enhance immunity and prevent cancer. And foods with strong carcinogenic effect should be avoided. Fourth, the misunderstanding of health care Tumor itself is a disease that consumes a lot. Once tumor occurs, the most conventional treatment methods are surgery, radiotherapy and chemotherapy. No matter which way, it will cause great damage to the patient’s body, so most of the patients will show extreme weakness or even cachexia, not only unable to carry out more in-depth treatment, but also difficult to maintain basic life activities. Therefore, the diet at this stage is extremely important for the recovery of patients. However, in actual life, many tumor patients have fallen into the following misunderstandings of health care. (a) dietary misconceptions 1. pickled food: salted fish produces dimethyl nitrite, which can be transformed into carcinogenic substance dimethyl nitrite in the body. Salted eggs, pickled vegetables, etc. also contain carcinogenic substances, should be eaten as little as possible. 2, barbecue food: roast beef, roast duck, roast lamb, roast goose, roast suckling pig, roast lamb skewers, etc., should not be eaten because they contain strong carcinogens. 3.Smoked foods: such as bacon, smoked liver, smoked fish, smoked eggs, smoked dried tofu, etc. contain benzopyrene carcinogens and are prone to esophageal cancer and stomach cancer when eaten frequently. 4.Fried food: after frying, carcinogenic polycyclic aromatic hydrocarbons are produced. When coffee is burnt, benzopyrene will increase 20 times. Oil pancake, stinky tofu, fried taro corner, doughnut, etc., as most of them use repeated oil, carcinogenic substances will be produced under high temperature. 5, moldy substances: rice, wheat, beans, corn, peanuts and other foods are susceptible to moisture mold, contaminated by mold will produce carcinogenic toxin – aflatoxin. 6, overnight cooked cabbage and sauerkraut: will produce nitrite, which will be converted into amine nitrite carcinogenic substances in the body. 7.Betel nut: chewing betel nut is a factor that causes oral cancer. 8, repeatedly boiled water: repeatedly boiled water contains nitrite, which will generate carcinogenic amines nitrite after entering the body. (2) Overuse of tonic Tumor patients often show extremely weak physical condition, therefore, one of the most common mistakes that many patients and their family members make is to give patients a lot of tonic. They hope to improve the physical condition of patients and enhance their immunity through tonic. However, from the clinical point of view, the result of taking a lot of supplements is often that the patient’s appetite becomes worse and worse, and the diet decreases day by day, and not only does the patient’s health not increase, but also becomes weaker. Because after radiotherapy, the patient’s spleen and stomach function is very poor, in a state of “deficiency, no tonic”, then a lot of tonic consumption, but will further affect the function of the spleen and stomach, resulting in dietary nutrition is difficult to absorb. These foods have their own characteristics, such as bird’s nest, sea cucumber, silver fungus, propolis, turtle, etc. are more nourishing and greasy, which can easily lead to poor appetite; while ginseng, Chinese wolfberry, cinnamon, etc. can benefit qi and nourish blood, but they are sweet and warm in nature, which will further lead to internal dampness and heat when consumed by patients with damp-heat bias. The scientific method of supplementation should be moderate according to the physical condition of the patient, from the amount to the nature of the taste are selected, in order to gradually comfortable body and appetite of the patient after consumption for the purpose. (3) Restriction of nutritional products There are two common misunderstandings about the attitude of taking tonic after suffering from tumor. In addition to the above-mentioned unlimited tonic, the other one is not to eat or rarely eat tonic, and even the protein needed by daily body refuses to eat. Their view is that after consuming supplements, tumor cells will take in most of them, and in this way, tumors will grow faster. In fact, this view is wrong. Tumor cells are crazy predators in the body. No matter what the nutritional status of the human body is, they will strongly seize the nutrition of the human body with their own growth characteristics, and if the nutrition is insufficient, the first one to die of starvation will never be the tumor cells, but the normal tissues. Therefore, it is wrong to try to stop the growth of tumor by reducing nutrition. In fact, many tumor patients finally die from the failure of internal organs, which is closely related to the loss of normal tissues in nutrition. (4) Rely on health food There are many foods with cancer prevention effects, such as garlic, kelp, shiitake mushroom, monkey head mushroom, barley, lily, asparagus, carrot, lingzhi, etc. Many patients will consume a lot of these anti-cancer foods after discovering the tumor, trying to achieve the purpose of tumor control through this method, instead, they end up with a biased diet, which is more harmful than beneficial to the body. In fact, the anti-cancer effects of all anti-cancer foods are only at the stage of speculation based on their ingredients and have not been confirmed by rigorous research. Moreover, we can reason that tumor cells are so powerful that they cannot be eradicated by chemotherapy drugs similar to biochemical weapons and radiation therapy equivalent to nuclear weapons, so how can we expect that foods with moderate effects can accidentally destroy them? Therefore, for the selection of anti-cancer food, we advocate that it should be consumed before the occurrence of tumor to play a preventive role; one is to select it according to the patient’s physical condition, such as lily, which is nourishing and enters the lung meridian and can be used for lung cancer treatment; barley, which is flat and enters the spleen and stomach and is mainly used to transform dampness, can be used for digestive system tumors; lingzhi, which is warm and hot, can be used for patients with obvious symptoms of Yang deficiency, etc. Based on the above dietary misunderstandings, how should tumor patients choose their own diet in the face of surgery, radiotherapy and chemotherapy? Maybe the following contents will help you make a correct and wise choice! (a) Postoperative conditioning Surgery is most likely to damage qi and blood, therefore, preoperative nutrition should be increased as much as possible to benefit qi and blood and enhance physical constitution, so as to create conditions for surgical treatment. Most of the postoperative patients are mainly suffering from deficiency of qi and blood, and deficiency of fluid and blood. Therefore, it is advisable for postoperative patients to eat foods with strong tonicity, such as fish, shrimp, mutton, turtle, etc.; choose some iron-rich foods, such as liver of various animals, egg yolk, tomato, spinach, apricot, peach, grape, grapefruit, etc. At the same time, supplemented with ginseng, astragalus, angelica, wolfberry, silver fungus, red dates, cinnamon and other drugs that benefit the qi and blood to increase the body’s tolerance, restore physical strength and resist the disease evil. (2) Pre- and post-chemotherapy conditioning Chemotherapy is one of the common methods for treating malignant tumors and is generally applied to patients who have lost the chance of surgery or relapsed after surgery or radiotherapy. During chemotherapy, chemotherapy drugs, while killing tumor cells, will also cause certain damage to normal cells and produce corresponding and huge toxic side effects. Without nutritional treatment for tumor patients, normal cells, tissues and organs are bound to be damaged. And reasonable diet can prevent and reduce weight loss and malnutrition brought by treatment, and improve the tolerance of human body to chemotherapy. Therefore, a reasonable diet should be arranged during chemotherapy. （About 70% of malignant tumor patients need radiation therapy, but while radiation therapy kills cancer cells, it also kills many normal cells indiscriminately. Therefore, patients will suffer from various discomforts during radiation therapy. Radiotherapy is regarded as a heat and poisonous evil in Chinese medicine, which is most likely to deplete fluid and cause symptoms of Qi and Yin deficiency: dry mouth and little energy, general weakness, red tongue without coating, and occasional nausea. Therefore, unlike chemotherapy, which causes mainly Yang deficiency, patients after radiotherapy tend to have Yin deficiency. The diet after radiotherapy should prohibit spicy and hot, fragrant and dry drugs and foods that hurt yin. More yin-nourishing and cool foods and tonic medicines can be eaten, such as bird’s nest, turtle, silver fungus, sea cucumber, lotus seeds, etc., and fruits such as apricot, peach, plum, raisin, red date, pineapple, prune, orange, tangerine, pomelo, etc., but not too much, otherwise it will affect the patient’s gastrointestinal function. (iv) Good lifestyle habits Hao Xishan, chairman of the Chinese Anti-Cancer Association and academician of the Chinese Academy of Engineering, pointed out in the 21st World Cancer Congress that among the lifestyle factors that cause cancer, smoking is currently the largest preventable cancer-causing factor in the world. Smoking is responsible for 80 to 90 percent of lung cancer deaths worldwide, and in developing countries the proportion reaches 30 percent. In terms of prevention, only 9 percent of countries currently require smoking bans in bars and restaurants, and 65 countries report not implementing any national smoke-free policies. David Hale, former president of the International Union Against Cancer, said, “I can’t tell you which foods consumed regularly may cause cancer, but one thing is certain, overeating leads to obesity, and obesity is one of the causes of cancer.” The leading American cancer research institute reports that bad habits account for 35 percent of cancer-causing factors. In view of this, paying attention to lifestyle prevention will keep many people away from cancer. (5) Spiritual conservation and humanistic care Emotional and spiritual factors play an important role in the development of tumor. According to Chinese medicine, violent anger hurts the liver, excessive happiness hurts the heart, worrying hurts the spleen, excessive sadness hurts the lung, and fright hurts the kidney. The principle of regulating the spirit is to “keep the spirit inside, nourish the quiet and hide the spirit”, to be satisfied with what we have, to move our emotions, to be cautious of joy and anger, to think less and to worry less. Today’s society is a stressful work, fast-paced life, many people often feel exhausted, very easy to produce anxiety, depression, in a state of subhealth. This is a danger signal, so we must learn to regulate the mood. In order to really adjust the emotions, you must do “calm and empty, the real gas from the”. Many people in the stock market have insomnia and elevated blood pressure, the reason for this is that it is difficult to maintain a stable state of mind is an important factor. People want to maintain a calm state of mind, should be “wise in the round and line in the square”, prior consideration as comprehensive as possible, deal with decisive and resolute. The plan is in the person, the success is in the sky, do not pay too much attention to the results, as long as the best effort can be.