DHA can promote the development of the nervous system and retina of the fetus, pregnant women who do not have enough intake of food can take some DHA to meet the needs of the body, take it after meals every day, according to the recommended dosage. Pregnant women can not only take DHA orally to promote fetal brain cell development, you can also eat more deep-sea fish in your diet to get these nutrients, which is beneficial to the development of the optic nerve and brain of the fetus. If the dietary intake is insufficient, you can take DHA supplements orally. DHA, also known as brain gold, can promote the growth and development of nerve cells, in the fourth month of pregnancy or the whole pregnancy to eat DHA can be, there is no strict method of restriction, in general, in accordance with the requirements of the drug manual to choose the corresponding amount of medicine can be, it is recommended that not less than nor higher than the amount taken. Pregnant women can choose to take DHA after meals, because the gastrointestinal tract has the highest absorption rate after meals.