What are the effects of high blood sugar on the fetus?

During pregnancy, high blood sugar in pregnant women is easy to cause gestational diabetes, which is easy to cause threatened abortion, macrosomia, malformation, inflammation infection, intrauterine hypoxia, stillbirth, etc., which has a certain impact on their own health and fetal growth and development. During pregnancy, attention should be paid to the rationality of diet and timely medical check-up.