Cold and flu is actually a general term that includes rhinitis with a runny nose, laryngitis with a sore and red throat, tonsillitis with a hoarse voice, bronchitis with a constant cough, influenza with a high fever and pneumonia. After getting a cold or flu, proper diet is a very important principle of recovery. Three meals a day with balanced nutrition and adequate intake of protein and calories are essential. When the body is infected by a virus, in order to resist the toxins of the pathogen, all kinds of metabolism in the body are hyperactive, which makes a lot of energy consumption. Although the appetite is not so good after a cold, the digestive function is reduced and the weight is lost, in order to replenish energy, it is necessary to maintain an adequate dietary intake, adhere to three meals a day, on time, and never eat a meal less. The intake of protein diet is the main method to obtain energy and strengthen immunity. There is a foreign doctrine that advocates and encourages people with colds and flu to eat meat in order to fully take in protein. It has been clinically observed that there are indeed positive effects. In addition, vegetable oils can quickly replenish energy. In particular, sesame oil is rich in linoleic acid, which can promote the synthesis of adrenaline in the body. This can help to cope with the nervousness caused by cold and can improve the body’s resistance to pathogens. Viral infections cause a sharp decrease in vitamins in the body, so it is important to take adequate vitamin supplements. The most important thing is to have a good understanding of the role of vitamin A in strengthening the mucous membrane of the throat, nasal cavity and lungs, and the role of vitamin C in adrenaline synthesis, especially when you have a cold. Vegetables containing vitamin C, in addition to yellow and green vegetables, there are still mung bean sprouts, soy bean sprouts, prunes, persimmons, peppers, lemons, oranges, grapes, grapefruit, etc.. Since these foods are natural in vitamins, they are more easily absorbed by the organism. The reason why garlic is a potent food for the treatment of colds is that it has a powerful effect of inhibiting the proliferation of viruses and bacteria. During the process of eating garlic, its active ingredients can pass through all the mucous membrane parts where bacteria or viruses are located, including the pharynx and nasal cavity, so that pathogens are inhibited, coughing is reduced, sputum volume is decreased, etc. Eating two to three heads of garlic a day can be effective. To increase appetite, spices and vinegar can also be used cleverly. Spicy things such as onion and ginger not only promote appetite, but also have sweating effect. If you have a mild cold, you can sometimes be cured by just drinking ginger soup. Sour foods such as vinegar, lemon juice and dried plums also have a significant appetite boosting effect and can be arranged to be consumed before meals.