Abnormally high blood glucose level during pregnancy significantly increases the danger of birth defects in babies born to kmothers with sugar diabetes. Abundant statistic is available to support this claim. For emaple, uncontrolled sugar diabetes at the time of conceprion can result in miscarriages in 30 to 60 percent of all pregnancies. The risk of congenial anomalies in infants of mothers with gestational diabets out of control is 2 to 5 times greater than that of the normal population without sugar diabets disease. Congenial anomalies and miscarriages account for more than 65 percent of perinatal losses in diabetic gestation. Uncontrolled gesstational diabetes can lead to diabetic ketoacidosis which means life-threatening metabolic derangements for the mother and death for the fetus.