Vitamin A: According to American medical research, if pregnant women take large amounts of vitamin A, it will increase the incidence of cleft lip and palate, congenital heart disease and central nervous system abnormalities in newborns. The recommended daily intake for normal people is about 2000IU, and for pregnant women, it should reach 3000IU. If the daily intake exceeds 10,000 units, the chance of fetal defects continues to increase. If the intake exceeds 20,000 units, the rate of fetal defects increases fourfold. The scariest thing is Wei