Gestational diabetes refers to high blood sugar during pregnancy due to the body developing a resistance to insulin. It is important to receive treatment for gestational diabetes, and blood sugar levels may return to normal after pregnancy.
Insulin is the hormone that controls blood sugar levels. Without treatment, gestational diabetes may harm the person and the baby. After the baby is born, gestational diabetes
This article discusses what gestational diabetes is, its causes, and how to treat it.
When blood sugar, or blood glucose, levels rise too high during pregnancy, the medical name for this is gestational diabetes. The hormonal changes that can cause it usually begin around the 20–24th week of pregnancy, in the second trimester.
Excessive levels of glucose in the bloodstream could cause complications for the pregnant person and their unborn baby. This is why it is important that a doctor diagnoses gestational diabetes promptly to ensure that blood glucose levels are stable.
Blood sugar levels usually return to normal after the baby is born, though about
Insulin resistance can lead to gestational diabetes. Though the body still produces insulin, the hormone is no longer effective at reducing blood sugar levels.
Hormones released from the placenta interfere with how well insulin can store glucose in fat and muscle cells. As a result, levels of glucose in the blood rise.
However, when a person has gestational diabetes, the body typically does not produce enough insulin to overcome insulin resistance.
Anyone who experiences concerning symptoms during pregnancy should contact a healthcare professional, no matter how subtle the symptoms are. People’s experiences of pregnancy vary. The changes could be a regular part of the pregnancy’s progression, but if a person is worried, it is important to receive medical advice.
The goal of treatment is to manage blood glucose levels,
The American Diabetes Association recommends a healthy diet for managing blood glucose levels.
Pregnant women, in general, should aim for:
- 175 grams (g) of carbohydrates per day
- at least 71 g of protein per day
- 28 g of fiber per day
After receiving a gestational diabetes diagnosis, a person should limit their intake of saturated fats and avoid trans fats altogether.
A healthy diet for someone with diabetes
- foods rich in fiber, such as whole grain pasta or brown bread
- fish or poultry instead of fatty and processed meats
- plenty of vegetables and whole fruits
- unsalted nuts, seeds, and legumes
It also involves avoiding sweets and other foods high in added sugar.
A doctor can describe the types of fish that pregnant people should avoid due to high levels of mercury. The
Before changing the diet, however, it is a good idea to speak with a doctor, registered dietician, or nutritionist about specific amounts of carbs, proteins, and fats to consume.
Learn more about healthy diets for people with gestational diabetes.
Getting regular exercise is another important component of managing blood glucose levels. However, it is especially important for pregnant people to speak with a healthcare professional before doing more physical activity.
When lifestyle changes are not working, a healthcare professional may prescribe medication to keep blood glucose levels under control. These medications may include insulin.
According to the American Diabetes Association, doctors recommend monitoring blood glucose levels throughout pregnancy. If a person is taking insulin, they may need to monitor more frequently to ensure that the dosage is correct.
Healthy glucose levels for women with gestational diabetes are under:
- 95 milligrams per deciliter (mg/dl) before meals
- 140 mg/dl 1 hour after eating
- 120 mg/dl 2 hours after eating
Doctors check for gestational diabetes between the 24th and 28th weeks of pregnancy using blood tests. These may involve a one- or two-step glucose tolerance test.
The one-step glucose tolerance test requires fasting overnight. A healthcare professional draws blood the next day to get a baseline reading. The person then consumes a drink containing 75 g of glucose. An hour later, a healthcare professional draws blood. They do this again after another hour has passed.
The two-step test does not require fasting. Instead, a person consumes a drink that contains 50 g of glucose, and a healthcare professional draws blood 1 hour later.
If the reading is abnormal, the person may need to do a 3-hour oral glucose tolerance test. This requires fasting. The person then consumes 100 g of glucose, and a healthcare professional draws their blood at 1 hour, 2 hours, and 3 hours afterward.
People with obesity or larger bodies are
- a family history of diabetes
- previously giving birth to an infant who weighed more than 9 pounds
- having prediabetes
- having polycystic ovary syndrome, or PCOS
- being of African, Hispanic, Latino, American Indian, Alaska Native, Pacific Islander,
Native Hawaiian, or Asian American descent
Gestational diabetes affects
While rates of occurrence and outcomes can be disproportionate, the risk of gestational diabetes increases with an increase in body mass index (BMI) across racial and ethnic groups. However, studies have found that even in cases of low BMI among Hispanic and Asian people, there is an increased risk.
None of the women involved had type 1 or type 2 diabetes before their pregnancies, and the study adjusted for the known risk factors of the condition. The researchers found the following prevalence rates:
- 15.5% among Asian American women
- 10.7% among Hispanic women
- 9% among non-Hispanic Black women
- 7.9% among non-Hispanic white women
A 2016 study found that the prevalence rate of gestational diabetes among American Indian and Alaska Native people was
However, most studies that discuss gestational diabetes and use racial and ethnic differences for clarity are limited. Further research that considers environmental, behavioral, genetic, and socioeconomic factors, as well as access to healthcare, is necessary.
Gestational diabetes does not typically cause congenital anomalies or abnormalities. This is because the condition develops in the second trimester.
Most of the possible complications are manageable. Still,
- high birth weight, which can lead to problems with delivery
- in the baby, low blood glucose levels after birth
- in the baby, breathing problems
- miscarriage or stillbirth
Gestational diabetes may also
People who develop preeclampsia may require an early delivery, which could involve a cesarean delivery.
Having gestational diabetes may also
People with larger bodies or obesity have an
However, a person should discuss any potential changes to their diet or physical activity levels with a doctor, especially while pregnant.
Gestational diabetes refers to high blood sugar levels during pregnancy. The condition
People with larger bodies or obesity have a
With appropriate treatment, gestational diabetes is manageable. If a person does not receive treatment or make necessary changes, it could
Pregnant people should receive prenatal care and attend all the recommended screenings, evaluations, and other appointments.