Poor glycemic control is associated with a greater risk of miscarriage, NICU admission, operative delivery, and shorter gestational periods. Especially at risk are those with preexisting diabetes, who would benefit from maintaining near-normal glycemia before conception. All DIP patients would benefit from earlier referral to the diabetes service. Emphasis is placed on the early detection and effective treatment of DIP to achieve normoglycemia if associated complications, perinatal mortality, and maternal morbidity are to be reduced. Earlier diagnosis, lifestyle management, and treatment of