5 Radish Radish Radish has the functions of promoting digestion, resolving phlegm and moistening dryness, relieving asthma, detoxifying, diuresis and tonifying deficiency. The root element in radish has a unique effect on preventing and treating colds. Lignin in radish can improve the activity of macrophages, and there is also an inducer of interferon, which can enhance the body's immunity and resist viruses.

6 chicken soup delicious cold medicine. The cysteine released by chicken during cooking is very similar to acetylcysteine, a drug used to treat bronchitis. Adding salt to chicken soup can relieve the symptoms of excessive phlegm, because it is similar to the ingredients of cough medicine. Adding some onions and garlic to chicken soup can make the effect more remarkable.

7 Fish and shellfish should be supplemented with selenium to prevent viruses. British experts pointed out that adequate selenium supplementation can increase the number of immune proteins, thus helping to clean up the influenza virus in the body. Selenium mainly comes from seafood such as oysters, lobsters, crabs and clams. Omega-3 in Atlantic salmon and other fish can help the blood to produce a large number of anti-influenza cells, and also help to improve human immunity.