Bird's nest, also known as Swallow Vegetable and Swallow Vegetable, is a valuable Chinese medicine. This is a nest built by male Jin Siyan (Swift family) in the breeding season by mixing saliva and its down and condensing it on the cliff. During the Ming and Qing Dynasties, bird's nest was divided into Bai Yan, Mao Yan and Xueyan. Nowadays, in the market circulation, it is divided into Guanyan, Mao Yan and Cao Yan, and Bai Yan and Xueyan belong to Guanyan. According to the nesting site, bird's nest can be divided into cave swallow and house swallow. Bird's nest is flat and sweet, which can moisten the lungs and nourish yin, and can relieve symptoms such as cough and hemoptysis. It is a traditional Chinese medicine tonic with the same name as velvet antler and ginseng. The ancients thought that bird's nest was "sweet and light in taste, nourishing lung and yin, resolving phlegm and relieving cough, tonifying deficiency and clearing up, and it was a holy medicine for conditioning deficiency and treating deficiency". "Bird's nest enters the lungs to control qi, the kidney controls water, the stomach supplements the spleen, and it is not dry."
Is the nutritional value of bird's nest really that high?
At present, the market value of bird's nest is very high, and the price is too high for ordinary people to buy. But is the nutritional value of bird's nest really that high? Bird's nest contains about 50% protein, 30% carbohydrate, 10% water and some minerals. The protein of bird's nest is higher, but its digestion speed is very slow, which is not as good as that of eggs. Bird's nest protein can't provide protein in proportion to human needs, so bird's nest protein can't be considered as high-quality protein.
It has been suggested that the unique sugar composition of bird's nest enhances the value of bird's nest. Bird's nest contains five monosaccharides and epidermal growth factors, among which the content of N- acetylneuraminic acid and epidermal growth factor can judge the quality of bird's nest. Bird's nest contains 18 kinds of amino acids needed by human body, including tryptophan, methionine, lysine, isoleucine, valine and phenylalanine. The main amino acids in bird's nest are sulfur-containing amino acids (methionine and cysteine) and glutamic acid. The water-soluble amino acids in bird's nest play an important role in the maintenance of women's skin, the growth and development of children and the health care of middle-aged and elderly people. Bird's nest sialic acid, also known as bird's nest acid, is a derivative of neuraminic acid, which is the main bioactive component in bird's nest and plays an important role in regulating human physiological and biochemical functions. Unfortunately, the nutritional value of the above-mentioned bird's nest has not been confirmed by real clinical trials, and there is no real evidence-based basis.
In fact, the real nutritional value is overestimated, because from the real nutritional ingredients, it is just ordinary food!
Can eating bird's nest often prevent cancer?
According to literature review, the pharmacological action of bird's nest is: 1. Antivirus and inhibition of hemagglutination reaction: the antiviral effect of bird's nest extract may be achieved by inhibiting the activity of hemagglutinin on envelope protein, that is, hemagglutinin may be the antiviral target of bird's nest extract. 2. Improve immune function, delay brain tissue aging, remove oxygen free radicals, improve cellular immune function and humoral immune function. Effects of bird's nest extract on bone loss and skin aging in postmenopausal women
Most of the above pharmacological effects are inferred from animal experiments and have not been really supported by clinical experiments. Even in animal experiments, there is no evidence that bird's nest can prevent cancer. Therefore, eating more bird's nest to prevent cancer is just an exaggerated propaganda for merchants to raise prices. Don't be cheated! The occurrence of cancer is related to genetic factors, diet, environment, lifestyle, stress and other factors. Only by paying attention to it in many ways can we really prevent the occurrence of cancer.
Is bird's nest really nutritious? Eating more bird's nest can prevent cancer? The oncologist finally told the truth. Through the detailed introduction of bird's nest above, we should correctly understand the nutritional value of this food in the future, and never blindly listen to some advertisements. Otherwise, it is easy to be misunderstood by some exaggerated propaganda. In fact, although bird's nest is also nutritious, it is somewhat unreliable to eat bird's nest regularly to prevent cancer.