Bird's Nest is a traditional food in China, which usually refers to a nest made of saliva and other substances secreted by Jin Siyan. Because it is rich in sugars, organic acids, free amino acids, sialic acid and other substances, it has certain effects of nourishing yin, moistening dryness, tonifying middle energizer and benefiting qi. However, because it also contains epidermal growth factor, it can promote wound healing, and at the same time it will act on advanced cancer cells, leading to their rapid growth and aggravating the pain of cancer patients. Therefore, patients with advanced cancer should use bird's nest with caution.

2. People in the acute stage of the disease

People in the acute stage of the disease or in the period of cold and fever will have decreased immune function, and the functions of various tissues, organs and systems will be affected to some extent, especially those with poor digestion and absorption ability. If they take bird's nest at this time, not only can they not fully absorb the effective components and nutrients in bird's nest, but they may also cause adverse reactions such as abdominal pain and diarrhea. Therefore, it is necessary to take bird's nest for conditioning after the acute period or the period of cold and fever.

3. People who are allergic to protein

Bird's nest contains a lot of protein. If people who have had allergic reactions to protein, they should take bird's nest carefully, so as not to cause allergic reactions again and lead to a series of adverse consequences. People who have had allergic reactions to bird's nest must not eat bird's nest any more. People who are allergic to protein but not sure whether they are allergic to bird's nest can eat a few grams of bird's nest first. If there is no allergic reaction, they can eat normally and recuperate their bodies.