Gestational Diabetes
Gestational diabetes is a type of diabetes that can develop during pregnancy in women who don’t already have diabetes. Every year, 2% to 10% of pregnancies in the United States are affected by gestational diabetes. Managing gestational diabetes will help make sure you have a healthy pregnancy and a healthy baby.
Causes
Gestational diabetes occurs when your body can’t make enough insulin during your pregnancy. Insulin is a hormone made by your pancreas that acts like a key to let blood sugar into the cells in your body for use as energy.
During pregnancy, your body makes more hormones and goes through other changes, such as weight gain. These changes cause your body’s cells to use insulin less effectively, a condition called insulin resistance. Insulin resistance increases your body’s need for insulin.
All pregnant women have some insulin resistance during late pregnancy. However, some women have insulin resistance even before they get pregnant. They start pregnancy with an increased need for insulin and are more likely to have gestational diabetes.
Symptoms & Risk Factors
Gestational diabetes typically doesn’t have any symptoms. Your medical history and whether you have any risk factors may suggest to your doctor that you could have gestational diabetes, but you’ll need to be tested to know for sure.
Complications
Having gestational diabetes can increase your risk of high blood pressure during pregnancy. It can also increase your risk of having a large baby that needs to be delivered by cesarean section (C-section).
If you have gestational diabetes, your baby is at higher risk of:
- Being very large (9 pounds or more), which can make delivery more difficult
- Being born early, which can cause breathing and other problems
- Having low blood sugar
- Developing type 2 diabetes later in life
Gestational diabetes usually goes away after your baby is born. However, about 50% of women with gestational diabetes go on to develop type 2 diabetes. You can lower your risk by reaching a healthy body weight after delivery. Visit your doctor to have your blood sugar tested 6 to 12 weeks after your baby is born and then every 1 to 3 years to make sure your levels are on target.
Getting Tested
It’s important to be tested for gestational diabetes so you can begin treatment to protect your health and your baby’s health.
Gestational diabetes usually develops around the 24th week of pregnancy, so you’ll probably be tested between 24 and 28 weeks.
If you’re at higher risk for gestational diabetes, your doctor may test you earlier. Blood sugar that’s higher than normal early in your pregnancy may indicate you have type 1 or type 2 diabetes rather than gestational diabetes.
Prevention
Before you get pregnant, you may be able to prevent gestational diabetes by losing weight if you’re overweight and getting regular physical activity.
Don’t try to lose weight if you’re already pregnant. You’ll need to gain some weight—but not too quickly—for your baby to be healthy. Talk to your doctor about how much weight you should gain for a healthy pregnancy.
Treatment
You can do a lot to manage your gestational diabetes. Go to all your prenatal appointments and follow your treatment plan, including:
- Checking your blood sugar to make sure your levels stay in a healthy range.
- Eating healthy food in the right amounts at the right times. Follow a healthy eating plan created by your doctor or dietitian.
- Being active. Regular physical activity that’s moderately intense (such as brisk walking) lowers your blood sugar and makes you more sensitive to insulin so your body won’t need as much. Make sure to check with your doctor about what kind of physical activity you can do and if there are any kinds you should avoid.
- Monitoring your baby. Your doctor will check your baby’s growth and development.
If healthy eating and being active aren’t enough to keep your blood sugar under control, your doctor may prescribe insulin, metformin, or other medication.
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