Pregnant, no folic acid.

Folic acid has a preventive effect on fetal neural tube defects. Most women start eating it in the first three months of pregnancy. But don't worry too much if they don't eat it, because it's just a preventive effect. Usually, as long as you do a good prenatal examination, you can do Down's screening or non-invasive DNA screening for fetal neural tube defects at about 4 months of pregnancy. To maintain a good attitude, psychological stress should not be too large. Because the maternal mentality for the belly of the baby is also affected. Usually pay attention to more rest, to prevent overwork.