With the development of society, more and more women have a certain knowledge of preparation for pregnancy, before pregnancy will be appropriate to supplement some folic acid. For prospective mothers, folic acid supplementation is even a very important thing. If a pregnant woman lacks folic acid, it may lead to fetal neural tube malformations, eye, lip and palate, cardiovascular, gastrointestinal and other organ malformations, and may also increase the risk of pre-eclampsia and placental abruption in pregnant women. So, how should we supplement folic acid scientifically? 1, when to start supplementing folic acid can be taken from 3 months before preparation for pregnancy to eat to the first 3 months of pregnancy, or even the entire pregnancy can be taken. 2, folic acid how to supplement? (1) Eat foods rich in folic acid: such as fresh dark green leafy vegetables, beans, grains, etc.; fresh fruits such as oranges, strawberries, cherries, bananas, kiwis, etc.. Other foods such as animal liver, poultry and eggs are also rich in folic acid. (2) Drug supplementation: Before pregnancy, you can take single folic acid preparations, and after pregnancy, you can take multivitamins (which contain folic acid), such as Elavil, Fosfol, Matna, etc. There are single folic acid tablets available in the market. There are two kinds of single folic acid tablets on the market, one contains only 0.4 mg (400 mcg) of folic acid in each tablet, and the other one contains 5 mg of folic acid in each tablet. Expectant mothers need to choose the former one, so don’t choose the wrong one. The average mom-to-be can take a supplement of 0.4 mg per day during pregnancy preparation and early pregnancy. However, for folic acid deficient moms-to-be need to add folic acid to the dosage, which needs to be taken according to the doctor’s instructions. Folic acid deficiency can be determined by testing the MTHFR gene. The recommended daily intake of folic acid for pregnant women in the Dietary Nutrient Reference Intake for Chinese Residents (2013 edition) of the Chinese Nutrition Society is 0.6 mg, with a maximum of 1 mg. 3. If I did not take folic acid 3 months before pregnancy, do I need to increase the amount of folic acid after an unplanned pregnancy? If pregnancy is detected, folic acid should be supplemented immediately, but there is no need to increase the dose. 4. Will taking folic acid during preparation for pregnancy affect menstruation? No, folic acid does not affect ovarian ovulation and endocrine axis in the body. 5.Will there be no fetal abnormality after taking folic acid? Do I still need to do prenatal checkups? Of course not, folic acid supplementation can only prevent some of the fetal malformations, fetal malformations and many factors, in order to give birth to a healthy and smart baby, mothers-to-be do not be lazy, please go to the hospital on time for prenatal checkups.