There is no definite conclusion on how many months of pregnancy to start taking DHA. Docosahexaenoic acid (DHA) is known as brain gold, the fetal brain development may be beneficial, 5-7 months in mid-pregnancy is the golden period of brain development, can be appropriate at this time to start eating DHA, generally do not require pregnant women mandatory supplementation of DHA. In addition to supplementing DHA, nutrition during pregnancy should be balanced with a variety of diets, both to ensure the intake of high-quality protein, but also to ensure that fresh vegetables and fruits to eat, in order to both control weight, but also to ensure the growth and development of the fetus. If you eat too much and too greasy, the incidence of high blood pressure and diabetes will increase. In addition, the time of taking DHA as well as the amount of DHA need to follow the doctor’s advice, do not take it on your own.