1, Religious Beliefs Many foreigners believe in Islam and Christianity, such as Christians. In the Old Testament, it is stipulated that carrion-eating or omnivorous birds, winged reptiles and scaleless fish are forbidden to eat, and bird's nest is a nest made of Jin Siyan's saliva, so it is also forbidden to eat.

2. I think that bird's nest is unclean. In addition, in the eyes of foreigners, bird's nest is made of swallow's saliva. They think it is very unclean, just like chicken feet. They usually walk in the feces of chickens, and even feel that bird's nest is disgusting. I can't swallow it even if I think about it, so foreigners don't eat bird's nest.

3. Caring for Animals Some foreigners have a serious love affair for animals, and bird's nest is a nest built by canaries for young birds. If the nest is taken away, it will bring danger to young birds and affect the reproduction of birds, so not eating bird's nest is also one of the manifestations of caring for animals.

4. I think that bird's nest is not nutritious. Foreigners don't eat bird's nest. Another point is that bird's nest is so expensive, but it is not worth paying for. It is better to eat other more nutritious foods, and it is more troublesome to eat bird's nest. The taste is not very good, so I give up eating bird's nest and eat other foods.

Dried bird's nest mainly contains some water-soluble protein (about 50%), carbohydrates (about 30%), water (about 10%), and some minerals (calcium, phosphorus, iron, sodium, potassium), amino acids, etc. Eating it does have the effects of nourishing yin and moistening dryness, tonifying the middle energizer, and beauty beauty, but these nutrients and nutritional effects.