1, folic acid

Folic acid can be said to be a supplement to vitamin B. It is extracted from spinach leaves, so it is called folic acid. Its main function is to prevent the fetus from forming a defect at birth. At that time, folic acid will be an important nutrient supplement for the normal development of fetal brain. It plays an important role in the healthy development of the fetus in the womb, and it can promote the growth of various tissues and cells of the fetus. Therefore, pregnant mothers can supplement folic acid in time before pregnancy, which will help improve the development of the newborn's nervous system and prevent the baby from being deformed after birth. It can also prevent the baby from being underweight or overweight when he is born, which will lead to premature birth.

2. Time for folic acid supplementation

If pregnant mothers want to supplement folic acid, it is best to supplement it three months before pregnancy or half a year earlier. At this time, we must use scientific methods, because the first three to six months are an important key to the development of the fetal central nervous system. If this time passes, the fetal notochord will form and the heart will start to beat, so it will be a little late to prevent it. Foods containing folic acid include oranges, apples, beans, spinach and so on.

3、DHA

Maternal dha supplementation during pregnancy can greatly promote the development of baby's retina and brain nervous system. Many pregnant mothers think that they can start eating dha in the seventh week, but this is not the case. The best time to eat Dha should be in the first 12 week of pregnancy. Because in the early pregnancy, it is enough to eat meat, eggs or milk as long as you have a reasonable diet. DHA can be added later. The time to eat dha is about 12 weeks of pregnancy. You can eat salmon or cod once or twice a day. In addition, foods containing dha include bird's nest, walnuts, almonds, peanuts and other nuts.