Early Screening and Treatment of Women With Prediabetes in Pregnancy

The investigators hope to learn whether treatment with medical nutrition therapy (MNT) for pregnant women with prediabetes decreases the rate and severity of impaired glucose tolerance later in pregnancy and improves perinatal outcomes. Given the rising rates of obesity and diabetes in this country even among young women and the adverse affects of diabetes of pregnant women and their infants, the investigators feel that it is important to not only identify women at high risk for diabetes early in pregnancy but determine the appropriate management strategy