At present, the cause of cleft lip cannot be accurately understood in medicine. Generally speaking, it can be divided into two categories: environmental factors and genetic factors.

Environmental factors: At the beginning of pregnancy, the whole physiological state of the mother is very important. If the environmental conditions of embryo development are infringed or disturbed, it may cause cleft lip.

Nutrition: Vomiting, anorexia and partial eclipse in early pregnancy can easily lead to the deficiency of vitamin D, folic acid, iron and calcium. In the meantime, we must pay attention to supplementing nutrition, especially foods rich in vitamins A, B2 and folic acid.

Virus infection: mother's upper respiratory tract infection, rubella, etc. It will also affect the development of embryos and become a possible cause of rabbit lips. At the same time, expectant mothers should also pay attention to protect themselves from damaging the uterus and its adjacent parts.

Causes of fat: most fat can enter the embryo through the placenta after entering the mother, and some fat may affect the development of the embryo and cause deformity, such as taking anti-epileptic, cholesterol-like, anti-allergic and anti-cancer fat.

In addition, attention should be paid to regulating emotions in the early stage of pregnancy, giving up smoking and drinking in advance, and avoiding frequent exposure to radiation or microwaves, which may become the inducement of cleft lip.

Genetic factors: The incidence of cleft lip in the offspring of direct or collateral relatives is higher than that of relatives without cleft lip deformity. Generally speaking, the probability of cleft lip in the first child is 1/600, but if the first child is cleft lip, the probability of cleft lip in the second child is 3/ 100.

The cause of cleft lip has been introduced in detail for you. Experts from Beijing Jingtong Plastic Surgery Hospital suggest that a comprehensive and cautious pre-pregnancy examination must be carried out before pregnancy, drugs should be used with caution during pregnancy, and bad habits should be given up to protect the baby's health.