What is gestational diabetes and who is at risk?

Gestational diabetes is a type of diabetes that develops during pregnancy when blood sugar levels become too high, affecting approximately 2-10% of pregnancies in the United States according to the Centers for Disease Control and Prevention (CDC).

This condition occurs when pregnancy hormones make it harder for insulin to work properly, causing glucose to build up in the blood instead of being used for energy. Unlike pre-existing diabetes, gestational diabetes typically develops around the 24th to 28th week of pregnancy when hormone levels peak.

Several factors significantly increase the risk of developing gestational diabetes:

• Age: Women over 25 years old have higher risk, with risk increasing substantially after age 35
• Weight: Being overweight or obese before pregnancy (BMI of 25 or higher)
• Family history: Having a parent or sibling with type 2 diabetes
• Previous pregnancy complications: History of gestational diabetes in prior pregnancies or giving birth to a baby weighing more than 9 pounds
• Ethnicity: Hispanic, African American, Native American, Asian, or Pacific Islander women face elevated risk
• Medical conditions: Polycystic ovary syndrome (PCOS) or prediabetes before pregnancy

Additional risk factors include having high blood pressure, previously delivering a stillborn baby, or having too much amniotic fluid during pregnancy. Women who are physically inactive before pregnancy also have increased susceptibility.

The American Diabetes Association recommends that all pregnant women be screened for gestational diabetes between 24-28 weeks of pregnancy using a glucose tolerance test. Women with high-risk factors may be tested earlier in pregnancy.

Most women with gestational diabetes can manage their condition through dietary changes, regular physical activity, and blood sugar monitoring. However, some may require insulin injections to maintain healthy glucose levels. The condition typically resolves after delivery, but women who develop gestational diabetes have a 50% chance of developing type 2 diabetes within 5-10 years.

Early detection and proper management are crucial for preventing complications for both mother and baby. Women should discuss their individual risk factors with their healthcare provider and follow recommended screening guidelines for optimal pregnancy outcomes.

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