Folic acid deficiency can be caused by:

Folic acid deficiency may be due to inadequate intake of nutrients from the diet. However, folic acid deficiency may cause neurovascular abnormalities in the fetus, and may even lead to anencephaly or spina bifida. Therefore, folic acid supplementation during pregnancy is extremely necessary. When pregnant women are picky and do not pay attention to intake of fresh vegetables and fruits, it is easy to cause folic acid deficiency. Folic acid is a vitamin in B group, which is mainly supplemented by vegetables and fruits. Therefore, it is necessary to choose foods high in vitamins and protein during pregnancy. At the same time, it is necessary to actively supplement folic acid in early pregnancy.