Probability of Developing Gestational Diabetes

Gestational diabetes mellitus (GDM) affects approximately 6-9% of pregnancies in the United States, with the CDC estimating about 8% overall. The prevalence has been increasing, driven by rising rates of obesity and older maternal age. All pregnant women are typically screened between 24-28 weeks of gestation.

Risk factors include overweight or obesity before pregnancy, age over 25, family history of type 2 diabetes, previous gestational diabetes, previous large baby (over 9 pounds), polycystic ovary syndrome, and certain ethnic backgrounds (Asian, Hispanic, Native American, and Black women have higher rates).

Gestational diabetes usually resolves after delivery, but it significantly increases future health risks. About 50% of women with GDM develop type 2 diabetes within 5-10 years. For the baby, risks include macrosomia (large birth weight), birth injuries, neonatal hypoglycemia, and increased risk of obesity and diabetes later in life. Management includes blood sugar monitoring, dietary changes, exercise, and insulin if needed. With proper management, most women with GDM have healthy pregnancies and deliveries.