Hearing that you have gestational diabetes at a prenatal appointment can feel like a gut punch, especially when you’ve been doing everything right. Take a breath: gestational diabetes is common, it’s manageable, and with the right care most women go on to have healthy pregnancies and healthy babies. This condition, a type of high blood sugar that develops specifically during pregnancy, typically shows up around the middle of the second trimester and usually resolves after delivery. This guide walks through what causes gestational diabetes, the symptoms and screening process, the health risks for both mother and baby, and exactly what day-to-day management actually looks like.
Consult Online Doctors
What Is Gestational Diabetes?
Gestational diabetes is a form of high blood sugar that’s first identified during pregnancy, in women who didn’t have diabetes beforehand. It happens because pregnancy hormones, produced by the placenta, make the body more resistant to insulin, the hormone that moves sugar out of the bloodstream and into cells for energy.
Start Baby Registry
For most women, the pancreas compensates by producing extra insulin to keep blood sugar in a normal range. Gestational diabetes develops when the pancreas can’t keep up with the increased demand, allowing blood sugar levels to climb higher than is healthy for the pregnancy. It typically appears between the 24th and 28th week of pregnancy, which is why screening is routinely done around that window.
Importantly, gestational diabetes is different from having diabetes that existed before pregnancy. It’s also different from type 2 diabetes, though the two are related; women who’ve had gestational diabetes face a meaningfully higher risk of developing type 2 diabetes later in life, which is covered in more depth in our guide to lowering your risk of type 2 diabetes.
What Causes Gestational Diabetes and Who’s at Risk?
The underlying cause, insulin resistance driven by placental hormones, affects every pregnancy to some degree, but several factors make it more likely that the pancreas won’t keep pace:
Buy Glucose Monitors
- Being overweight or obese before pregnancy
- A family history of type 2 diabetes
- A personal history of this condition in a previous pregnancy
- Polycystic ovary syndrome, which is already linked to insulin resistance; see our guide on PCOS symptoms and long-term management for more on that connection, and our related guide on ovarian cysts and when to worry if PCOS-related cysts are also part of your history
- Having given birth previously to a baby weighing more than nine pounds
- Being over age 25, with risk increasing further with age
- Certain ethnic backgrounds, including Hispanic, Black, Native American, South Asian, and Pacific Islander populations, which carry a higher documented risk
- A history of prediabetes, where blood sugar has been higher than normal but not yet in the diabetic range
It’s worth remembering that gestational diabetes can also develop in women with none of these risk factors, which is exactly why routine screening is offered to essentially all pregnant women rather than only those considered high-risk.
Assess Corporate Risk
Gestational Diabetes Symptoms
One of the tricky things about the condition is that it often causes no noticeable symptoms at all, which is why screening tests matter so much rather than waiting for symptoms to appear. When symptoms do occur, they can include:
Track Health Symptoms
- Increased thirst and a dry mouth
- More frequent urination beyond what’s typical in pregnancy
- Fatigue that feels more pronounced than usual pregnancy tiredness
- Blurred vision
- Recurrent infections, including yeast infections or urinary tract infections
Because these symptoms overlap so heavily with normal pregnancy discomforts, most cases are identified through the standard glucose screening test rather than through symptoms a woman notices herself.
How Gestational Diabetes Is Diagnosed
Screening usually happens between 24 and 28 weeks of pregnancy, though it may be done earlier for women with significant risk factors. The most common approach is a two-step process.
Start Baby Registry
The Glucose Challenge Test
You drink a sugary liquid, and your blood sugar is measured an hour later. No fasting is required beforehand. If the result is above a certain threshold, it doesn’t mean you have gestational diabetes yet, but it does mean you’ll need a follow-up test to confirm.
The Glucose Tolerance Test
This longer, more definitive test requires fasting overnight, followed by drinking a more concentrated glucose solution and having blood sugar checked at intervals over the following two to three hours. Two or more elevated readings during this test typically confirm a diagnosis of this diagnosis.
Consult Online Doctors
Some providers use a one-step approach instead, skipping straight to a single fasting glucose tolerance test. Either approach is considered medically appropriate, and your provider will let you know which one your practice uses.
Health Risks of Gestational Diabetes
Well-managed gestational diabetes carries a good outlook for both mother and baby, but uncontrolled blood sugar during pregnancy can raise the risk of several complications, which is exactly why monitoring and treatment matter.
Risks for the Baby
- Excessive birth weight (macrosomia), which can complicate delivery and increase the likelihood of a cesarean section
- Early or preterm birth
- Low blood sugar shortly after birth, since the baby’s pancreas has adjusted to producing extra insulin in response to the mother’s higher blood sugar
- A somewhat higher lifetime risk of obesity and type 2 diabetes for the child
Risks for the Mother
- Higher blood pressure and preeclampsia, a serious pregnancy complication involving high blood pressure and organ stress
- Increased likelihood of needing a cesarean delivery
- A substantially higher risk of developing type 2 diabetes later in life
- Higher likelihood of developing this condition again in a future pregnancy
None of this is meant to be alarming; it’s meant to explain why doctors treat gestational diabetes proactively rather than waiting to see what happens. Consistent management dramatically reduces these risks.
Buy Glucose Monitors
Treatment and Management Options
The goal of treatment is simple: keep blood sugar within a target range throughout the rest of the pregnancy. Most women manage the condition successfully through lifestyle changes alone, though some need medication as well.
Schedule Health Screenings
Blood Sugar Monitoring
You’ll likely be asked to check your blood sugar with a fingerstick glucose meter several times a day, typically fasting first thing in the morning and again after meals, to track how your body is responding to food and activity. Continuous glucose monitors are increasingly used in pregnancy as well, giving a fuller picture of blood sugar trends than fingersticks alone, though your provider will advise on what’s appropriate during pregnancy specifically.
Nutrition Changes
A registered dietitian or diabetes educator can help you build a meal plan that balances carbohydrates, protein, and fat to keep blood sugar steady, rather than eliminating entire food groups. This usually means spacing carbohydrates throughout the day, pairing them with protein and fiber, and avoiding large amounts of sugary drinks and refined carbohydrates in one sitting.
Assess Corporate Risk
Physical Activity
Regular movement, such as walking after meals, helps muscles use glucose more efficiently and can meaningfully lower blood sugar levels, when your provider confirms it’s safe for your specific pregnancy.
Medication
When diet and exercise aren’t enough to keep blood sugar in the target range, doctors may prescribe insulin, which is considered safe during pregnancy since it doesn’t cross the placenta, or in some cases an oral medication. The specific medication and dosing is individualized and monitored closely throughout the remainder of the pregnancy.
Track Health Symptoms
Extra Monitoring During Pregnancy and Delivery
Women with gestational diabetes typically have more frequent prenatal visits and additional ultrasounds to track the baby’s growth. Depending on blood sugar control and estimated baby size, your provider may discuss the timing and method of delivery, and your baby’s blood sugar will usually be checked shortly after birth as a precaution.
Costs and Insurance Considerations
Glucose screening tests during pregnancy are considered standard prenatal care and are covered by essentially all health insurance plans, including Medicaid, often without additional cost sharing under preventive care provisions. If you’re diagnosed, ongoing costs can include a glucose meter and test strips, dietitian consultations, additional ultrasounds, and possibly insulin or other medication.
Most of these are covered under standard maternity benefits, though the exact copay or coinsurance depends on your specific plan. If you’re managing costs on an ACA marketplace plan, reviewing your plan details through our guide on ACA marketplace health plans, subsidies, and enrollment can help you understand what’s covered under your specific policy and where to look for lower-cost options for supplies like test strips.
Start Baby Registry
Prevention Tips for Future Pregnancies
While this diagnosis can’t always be prevented, especially for women with strong risk factors, some steps can lower the odds or improve outcomes in future pregnancies:
- Reach a healthy weight before conceiving, if possible, since pre-pregnancy weight is one of the more modifiable risk factors
- Stay physically active before and during pregnancy, with your provider’s guidance
- Follow up on prediabetes or PCOS diagnoses before becoming pregnant, since managing insulin resistance ahead of time can help
- Get screened early in future pregnancies if you’ve had gestational diabetes before, since recurrence is common and earlier detection means earlier management
When to See a Doctor
Follow your provider’s recommended screening schedule even if you feel completely fine, since this condition so often causes no symptoms. Contact your provider promptly if you notice unusual thirst, frequent urination beyond your normal pregnancy pattern, blurred vision, or if you’re diagnosed and your home blood sugar readings are consistently above the targets you’ve been given, since this may mean your management plan needs adjusting.
Consult Online Doctors
Frequently Asked Questions
Will gestational diabetes go away after I give birth?
In most cases, yes. Blood sugar typically returns to normal shortly after delivery once the placenta, and the hormones driving insulin resistance, are gone. Your provider will usually recommend a follow-up glucose test six to twelve weeks postpartum to confirm.
Does gestational diabetes mean I’ll definitely need a C-section?
No. Many women with well-managed gestational diabetes deliver vaginally without complications. The decision depends more on estimated baby size, blood sugar control, and other pregnancy factors than on the diagnosis alone.
Can I still eat carbohydrates if I have gestational diabetes?
Yes. The goal isn’t to eliminate carbohydrates but to manage the amount and timing, generally spreading them across smaller, more frequent meals paired with protein and fiber to prevent blood sugar spikes.
Book Therapy Sessions
Is gestational diabetes my fault?
No. It’s driven by hormonal changes from the placenta that every pregnant woman experiences to some degree; some pancreases simply can’t keep up with the extra insulin demand, regardless of diet or lifestyle beforehand.
Will my baby be born with diabetes?
No, the condition doesn’t cause diabetes in a newborn. However, babies may have low blood sugar right after birth that needs monitoring, and they do carry a somewhat higher lifetime risk of developing type 2 diabetes eventually.
Do I need to keep monitoring my blood sugar after pregnancy?
Most providers recommend a follow-up glucose test after delivery, and ongoing periodic screening for type 2 diabetes for years afterward, since having gestational diabetes is one of the stronger predictors of future diabetes risk.
Get Study Guides
The Bottom Line
A this diagnosis diagnosis isn’t a reflection of anything you did wrong, and it doesn’t mean your pregnancy is automatically high-risk in a scary sense. With consistent blood sugar monitoring, nutrition adjustments, activity, and medication when needed, the vast majority of women with gestational diabetes go on to have healthy pregnancies and healthy babies.
The most useful thing you can do after a diagnosis is lean into the resources offered, your dietitian, your care team, and any diabetes education classes, rather than trying to figure it all out alone. Staying on top of follow-up testing after delivery also matters, since it’s your best tool for catching and addressing future diabetes risk early.
This article is for informational purposes only and isn’t a substitute for professional medical advice; please consult a licensed doctor for guidance specific to your pregnancy.
Buy Glucose Monitors