If pregnant women eat bird’s nest milk in moderation, the fetus will not be overweight. Moderate consumption of bird’s nest milk during pregnancy can replenish the nutrients needed by the body and generally will not cause fetal overweight, but if you eat too much bird’s nest milk every day and accompany with overeating, you may have excessive nutrition that will cause the fetus to be overweight. Fetal overweight is caused by a variety of reasons, in addition to over-nutrition may also be caused by genetic factors, parents’ weight is heavier, the weight of the fetus will be relatively heavier, if there is gestational diabetes, the mother’s umbilical cord blood glucose is relatively high, the fetus in the uterus in the development of the islets have been in the high-sugar environment, leading to the pancreatic islet cell hyperplasia, hypertrophy, will also cause fetal overweight. Fetal overweight is important to control the diet, go to the hospital to check under the guidance of the doctor to deal with.