Patient's question:
NoDoctor's answer:
Folic acid consumed before pregnancy accumulates in the mother's body. After sperm and egg fertilize, they form a zygote. In the first 10 weeks of fetal development, most of the nutrition is provided by the yolk sac within the zygote. Around the 11th week, the placenta gradually forms and begins to provide nutrition by directly absorbing nutrients from the mother's blood. If there is a severe deficiency of folic acid in the early stages, the amount of folic acid in the yolk sac will also be very limited. Supplementing after pregnancy is effective, but starting before pregnancy is even better.