There is indeed some truth to the claim that eating bird's nest while pregnant makes the fetus' skin whiter and more delicate. Modern science has found that bird's nest contains unique bioactive protein molecules (commonly known as collagen), which have the ability to promote the regeneration of epidermal cells, increase the immune function of induced cells, and increase an individual's resistance to X-ray damage, etc. Such protein cells are easily absorbed by the human body, which is unavailable to proteins in other foods.

However, the functions of bird's nest seem to be over-exaggerated in the eyes of Western medicine. An obstetrician and gynecologist said that there is no scientific evidence to verify the claim that eating bird's nest can make the fetus whiter. The skin condition of the fetus is largely related to its genes. In Chinese medicine, bird's nest has a nourishing effect, but when we analyze its chemical composition, there is no ingredient that can make the fetus white.

Experts said the hospital will not recommend bird's nest to pregnant women, but if they take it on their own, the hospital is not against it. Bird's nest, as a health product, does have a lot of benefits for pregnant women. The collagen contained in bird's nest can make the skin texture of pregnant women more delicate and elastic, but it seems to have no direct effect on the fetus. Experts also said they prefer pregnant women to eat more vegetables and fruits, emphasizing vitamin intake and balanced nutrition. In addition, special attention should be paid to calcium and vitamin supplements in the second trimester.