Gestational Diabetes

What Gestational Diabetes Is

Some degree of insulin resistance is a normal part of pregnancy. As the placenta grows, it releases rising amounts of hormones, including placental lactogen, estrogen, and progesterone, that make the body's cells respond less readily to insulin.^[1] Researchers describe this as a deliberate physiological shift, since reduced insulin sensitivity in the mother helps direct more glucose toward the growing fetus.^[1] In most pregnancies, the pancreas responds by producing more insulin to match the rising resistance. Gestational diabetes is what researchers call it when that compensation falls short, most often because of pancreatic beta-cell dysfunction, and blood glucose runs higher as a result.^[1] Research also describes gestational diabetes as typically resolving after delivery, once the placenta is delivered and the hormone-driven insulin resistance eases, though the shift back isn't instant for everyone.^[1]

Which Metrics People With It Commonly Track

Blood glucose logging is the metric most closely tied to gestational diabetes, whether it comes from fingerstick readings or a continuous glucose monitor. See our blood glucose entry for how each method works. Fasting glucose and HbA1c are the lab values that come up alongside day-to-day glucose logging, since fasting glucose reflects a baseline reading and HbA1c reflects an average over roughly three months. Our fasting glucose and HbA1c entries cover how each is measured. Insulin, the hormone at the center of the condition's mechanism, is also a lab value people track over time. See our insulin entry for what it measures.

Because gestational diabetes is a pregnancy-specific condition, people managing it often log these metrics alongside broader pregnancy tracking, including weight and fetal heart rate readings recorded at prenatal visits.

How Go Go Gaia Supports Tracking It

Go Go Gaia's pregnancy mode lets you log blood glucose readings alongside the rest of your pregnancy data, so a day's numbers sit next to weight, symptoms, and other logged metrics instead of living in a separate app. Glucose data can also sync automatically from a connected CGM through Apple HealthKit. The app displays your data over time. It doesn't interpret readings or offer treatment or monitoring guidance.

What the Research Shows

National data show gestational diabetes prevalence in the United States rose from 4.6% of pregnancies in 2006 to 8.4% in 2017, an increase researchers describe as nearly doubling before the rate leveled off.^[2] The increase was more pronounced among minority populations and among pregnancies affected by higher body weight, lower activity levels, and lower household income, though the study notes these are population-level associations rather than individual predictors.^[2]

A 2021 systematic review and meta-analysis pooling 39 cohort studies and nearly 2.85 million women found that a history of gestational diabetes was associated with a substantially higher relative risk of developing type 2 diabetes later in life compared with pregnancies without it.^[3] The same review found that risk varied by factors including maternal age, family history of diabetes, and geographic region, and it noted that postpartum diabetes screening among women with a gestational diabetes history remains inconsistent across health systems.^[3]

Related Terms

Frequently Asked Questions

Educational information based on published sources. Not medical advice. For personal concerns, please consult your doctor.

What causes gestational diabetes?

As pregnancy progresses, the placenta releases rising levels of hormones, including placental lactogen, estrogen, and progesterone, that reduce how well the body responds to insulin. That insulin resistance is a normal part of pregnancy, since it helps direct glucose toward the growing fetus. Gestational diabetes develops when the pancreas can't increase insulin output enough to keep up, so blood glucose runs higher than it would otherwise.^[1]

Does gestational diabetes go away after birth?

Research describes gestational diabetes as typically resolving after delivery, once the placenta is delivered and the hormone-driven insulin resistance eases. Longer-term studies also find a higher rate of type 2 diabetes later in life among women who had gestational diabetes compared with women who didn't, which is why it's an area of continued research interest well beyond the pregnancy itself.^[1][3]

What metrics do people with gestational diabetes commonly track?

Blood glucose logging is central, whether from fingersticks or a continuous glucose monitor. Lab values like fasting glucose, HbA1c, and insulin also come up as part of the broader picture. Many people track these alongside other pregnancy metrics like weight, symptoms, and fetal heart rate readings from prenatal visits.