Introduction: Bird's nest is made from the saliva of swiftlets, so it is very valuable and rich in nutrients. Bird's nest also has many functions and is a very nourishing medicine. People also know that bird's nests are the saliva of swallows. Why are bird's nests so expensive? Next, follow the editor to find out more. 1. Why are bird's nests so expensive?

In fact, bird's nests are the saliva that swallows spit out in daily life, and this kind of swallow is called a swiftlet. When they live in their own nests, they mix saliva with mud. Come together and then build your own cabin. Therefore, the saliva of ordinary swallows has no nutrients, and it must be swiftlets. Therefore, swiftlets are smaller than ordinary swallows, and their constitution is also relatively light. There are a lot of nutrients in their saliva. When swallows build nests, they usually secrete a liquid called colloid in their mouths in spring, and their saliva turns light yellow, which is a main component of bird's nests.

The nests made by swiftlets are usually in some caves. At this time, the terrain is relatively steep, so picking is risky. After picking, there is also a process to pick out some impurities inside. The whole process can only be completed, so bird's nest is a relatively good health product, but its production process is relatively complicated, so the labor cost plus its nutritional value make bird's nest more expensive. 2. The nutritional value of bird's nest is relatively high

The nutritional value of bird's nest is relatively high. It not only has medical value but also has health care effects. Bird's nest can help the body nourish yin and yang, replenish the spleen and qi. It is also useful for some patients with high blood pressure and can strengthen the heart and lower blood pressure, so it is especially suitable for people with high blood pressure. Bird's nest is also more suitable for people who are recovering from serious illnesses. It can replenish vitality and allow people to have better nutritional supplements. Therefore, natural bird's nests are more expensive and more expensive. There is a reason for their high price, and their nutritional value is also very high.