During chemotherapy for lung cancer patients, drugs will inevitably damage normal cells and produce corresponding toxic side effects, such as decreased immune function, decreased white blood cells, ulceration of digestive mucosa and hair loss, while killing tumor cells. At this time, the patient’s diet should also make corresponding changes: 1, salt taste thick point, add ingredients to taste Lung cancer patients do not advocate big fish and meat, but the same dish can be done “flavorful”, otherwise the patient itself has a poor appetite, and then a strong desire for light, will not be able to eat, and ultimately malnutrition. “Cooking can be less oil, appropriate more salt, or through soy sauce, ginger and garlic to enhance the flavor, to ensure that patients can eat.” 2.Eat less sugar-rich food The ability of tumor cells to absorb glucose is more than 10 times that of normal cells, but the way cancer cells utilize glucose is very different from normal cells. A glucose gets completely burned in the body and can produce a lot of heat. However, cancer cells only utilize about 5% of this heat, which is actually thrown away as waste just after it is burned. It’s like eating an apple. Cancer cells take one bite of each apple and throw it away, creating a lot of waste – lactic acid. Lactic acid inhibits T-cell activity and therefore suppresses the immune system. “Cancer cells in the body not only eat a large amount of glucose to maintain their rapid growth needs, but also spit out harmful substances to inhibit the body’s immune system, therefore, tumor patients must eat less or no sugary foods. Internationally, it is generally believed that the daily intake of sugar per person should be within 50 grams.” 3, to stay away from phosphate food additives Phosphate food additives will not only accelerate the growth of lung cancer, but also promote the occurrence of lung cancer. Researchers have found that inorganic phosphorus intake can activate certain key signaling channels in lung cancer cells. If 0.5%~1.0% of inorganic phosphorus (equivalent to the daily intake of human body) was added to the feed of mice with lung cancer, the volume of lung cancer in the mice was significantly larger than that of the mice that ate the feed without inorganic phosphorus added after 4 weeks. Cola, lemonade, chocolate, ice cream, cookies, ketchup, mayonnaise, meat products and spontaneous powder contain phosphate food additives, lung cancer patients must stay away from these foods. 4. Supplement high protein food Patients should supplement high protein food, such as milk, lean meat, fish, animal liver, red dates, red beans and so on. River crab, eel, black fish, beef, etc. also help to elevate white blood cells. If there is loss of appetite and indigestion, add spleen-boosting and appetizing foods, such as hawthorn, white lentils, radish, shiitake mushrooms, and Chenpi. In addition, many kinds of edible mushrooms such as shiitake mushroom and reishi mushroom have certain anti-cancer effects, especially shiitake mushroom has more nutritional value than all mushrooms, containing 7 kinds of essential amino acids, containing calcium, copper, iron, manganese and other trace elements, and it also contains many kinds of sugar and enzyme, which can improve and enhance human immunity, so it can be eaten more appropriately.