If it is early pregnancy occasionally a day without food although the effect on the fetus is not great, but still not recommended, if it is in the middle and late pregnancy, a day without food is easy to cause fetal hypoglycemia, is not conducive to the growth of the fetus. The fetus mainly absorbs nutrients from the mother through the placenta to supply its own growth, development and metabolism. Therefore, if a pregnant woman does not eat, the fetus cannot take in enough nutrients, which has a great impact on the growth and development of the fetus. If it is early pregnancy, pregnant women may not eat for a day because of pregnancy reaction, but at this time, the embryo is still small, and the demand for nutrition is relatively small, occasionally not eating for a day, you can through the mother’s stored nutrients to supplement nutrition, and will not have too much effect, but it may cause pregnant women hypoglycemia, so it is still not recommended. However, the growth and development of the fetus in the middle and late stages of pregnancy is relatively fast, and the requirements for nutrition are also relatively high. At this time, if the pregnant woman does not eat for a day, the mother’s stored nutrients are not able to supply the needs of the fetus, which may easily lead to hypoglycemia, which in turn affects the growth and development of the fetus and is not conducive to the health of the fetus. Pregnant women should pay more attention to dietary problems after pregnancy, they can have a small number of meals, but they should not skip meals or overeat, and their diet should be balanced and nutritious. If there is any discomfort during pregnancy, you should consult a doctor in time.