Gestational diabetes is a type of diabetes that develops during pregnancy. It is caused by the hormones produced by the placenta, which can make it harder for insulin to do its job of controlling blood sugar levels. This can lead to high blood sugar levels, which can be harmful to both the mother and the baby.
Managing gestational diabetes is important to ensure the health of both mother and baby. This may involve monitoring blood sugar levels, following a special diet, and sometimes taking medication to help control blood sugar levels. It is also important to have regular check-ups with healthcare providers to monitor both the mother’s and the baby’s health.
While gestational diabetes can be concerning, with proper management and care, most women with this condition are able to have healthy pregnancies and deliver healthy babies. It is important to work closely with healthcare providers to ensure the best possible outcome for both mother and baby.
How Gestational Diabetes Develops
If you’re pregnant, your body might struggle to make enough insulin, which can lead to higher levels of glucose in your blood. This is known as gestational diabetes.
The hormones from the placenta can interfere with insulin, causing resistance and increased blood glucose levels.
Risk Factors for Gestational Diabetes
Factors such as a family history of diabetes, high BMI, age, previous stillbirth, and certain health conditions can raise the chances of developing gestational diabetes.
Other risk factors for gestational diabetes include being overweight or obese, having polycystic ovary syndrome (PCOS), being of certain ethnicities (such as Hispanic, African American, Native American, or Asian), and having a history of gestational diabetes in a previous pregnancy.
It is important for pregnant women to be aware of these risk factors and to work with their healthcare provider to monitor and manage their blood sugar levels during pregnancy to reduce the risk of developing gestational diabetes.
Screening for Gestational Diabetes
Typically, a screening is done between the 24th to 28th weeks of pregnancy to catch gestational diabetes early.
During the screening, a glucose challenge test or an oral glucose tolerance test may be performed to check how your body processes sugar.
Getting gestational diabetes during the second or third trimester can lead to complications during and after pregnancy.
It is important to closely monitor blood sugar levels and follow a healthy diet and exercise routine to manage gestational diabetes and reduce the risk of complications for both the mother and the baby.
Reduce Risk and Address Symptoms
Controlling blood sugar levels through a healthy lifestyle can reduce the risks associated with gestational diabetes.
In addition to following a healthy diet and maintaining a regular exercise routine, it is important for pregnant women with gestational diabetes to monitor their blood sugar levels regularly. This can help in managing the condition effectively and reducing the risk of complications for both the mother and the baby.
It is also recommended for women with gestational diabetes to work closely with healthcare providers to develop a personalized treatment plan that may include medication or insulin therapy if necessary. Regular prenatal check-ups and monitoring of fetal growth and development are crucial to ensure the health and well-being of both the mother and the baby.
Symptoms and Risks
Gestational diabetes can often go unnoticed, but signs like increased thirst and fatigue may indicate high blood sugar levels.
Other symptoms of gestational diabetes may include frequent urination, blurred vision, and recurrent infections.
Women with gestational diabetes are at an increased risk of developing type 2 diabetes later in life.
Uncontrolled gestational diabetes can lead to complications during pregnancy and delivery, such as macrosomia (a large baby), preterm birth, and preeclampsia.
Monitoring blood sugar levels, following a healthy diet, and staying active can help manage gestational diabetes and reduce associated risks.
Potential Complications
While most pregnancies with gestational diabetes proceed without issues, there is a higher risk of certain complications like larger-than-usual babies or premature labor.
Treatment and Monitoring
It is essential to manage gestational diabetes by controlling blood sugar levels through lifestyle changes, monitoring, and medication if needed.
Postnatal Care

Regular postpartum testing is important to monitor the risk of diabetes and ensure overall health.
Preventing Future Risk

Women with a history of gestational diabetes should take steps to lower the risk of developing type 2 diabetes in the future through a healthy lifestyle.
Planning for Future Pregnancies
Prior to pregnancy, individuals with a history of gestational diabetes should seek medical advice and appropriate pre-conception care to effectively manage their condition.
If your healthcare provider suggests self-testing your blood sugar levels, use a finger-pricking device as you did during gestational diabetes.
Last reviewed: 08 December 2022
Next review due: 08 December 2025
About 10% of pregnant women in the United States experience gestational diabetes, a form of glucose intolerance that can affect the health of both mother and baby. The prevalence of gestational diabetes has risen in the last two decades.
Early detection allows for effective management without long-term health problems, despite the alarming diagnosis.
It is important for individuals with gestational diabetes to follow a healthy diet, exercise regularly, and monitor their blood sugar levels closely during pregnancy. Seeking the advice of a healthcare provider and attending regular prenatal check-ups is essential for the well-being of both the mother and the baby.
Educating yourself about gestational diabetes and its potential risks can help you make informed decisions regarding your health during pregnancy. By staying informed and proactive, you can effectively manage gestational diabetes and ensure a healthy pregnancy and delivery.
What is gestational diabetes?
Gestational diabetes is exclusive to pregnant women. While the exact cause is unknown, it is believed that hormones from the placenta during pregnancy disrupt the mother’s insulin use. This leads to glucose buildup in the blood instead of being utilized by the mother and fetus.
It is important for pregnant women to be screened for gestational diabetes, as high blood sugar levels can lead to complications during pregnancy and delivery. Women with gestational diabetes have an increased risk of developing type 2 diabetes later in life, so proper management and monitoring of blood sugar levels is crucial.
Managing gestational diabetes usually involves a combination of healthy eating, regular physical activity, blood sugar monitoring, and sometimes medication. By controlling blood sugar levels, women with gestational diabetes can reduce the risk of complications and ensure the health of both themselves and their baby.
Who is at risk for gestational diabetes?
Some risk factors for gestational diabetes include a history of the condition, obesity, or a family history of diabetes. Around 90% of pregnant women have at least one risk factor, with different levels of risk.
Other risk factors for gestational diabetes include being over the age of 25, having previously given birth to a baby weighing over 9 pounds, or belonging to certain ethnic groups such as African American, Hispanic, or Native American.
Women who have polycystic ovary syndrome (PCOS) or have been diagnosed with prediabetes are also at an increased risk for gestational diabetes. Additionally, women who are carrying multiple babies (twins, triplets, etc.) are more likely to develop gestational diabetes during their pregnancy.
It is important for pregnant women to be aware of these risk factors and to talk to their healthcare provider about screening for gestational diabetes. Early detection and management of this condition can help prevent complications for both the mother and the baby.
Who should be tested for gestational diabetes?
All pregnant women in the U.S. are screened for gestational diabetes between weeks 24 and 28 with an oral glucose tolerance test. High-risk individuals may get tested earlier, often in the first trimester.
How is gestational diabetes treated?
Treatment focuses on preventing excessive fetal growth, requiring dietary changes, blood sugar monitoring, and potentially insulin injections or oral medication. Typically, gestational diabetes resolves after childbirth.
What are the risks for mothers and babies?
Mothers with gestational diabetes have a higher risk of various complications during pregnancy, labor, and delivery. The baby also faces a higher risk of health problems later in life.
What are the risks for labor and delivery?
Maintaining normal blood sugar levels helps prevent complications during labor and delivery. Elevated blood glucose levels during labor can affect the baby’s health, leading to post-delivery hypoglycemia.
After childbirth, it’s crucial to monitor blood sugar levels, and a glucose test should be repeated around six weeks postpartum.
Treatments for gestational diabetes
Yale Medicine offers a comprehensive approach to treating gestational diabetes, including personalized meal plans, regular exercise programs, and medication when necessary. In addition, our team of specialists closely monitors blood sugar levels and provides education on managing the condition to ensure the health of both the mother and baby.
Advancements in insulin pump technology
One area of focus for researchers at Yale Medicine is the development of advanced insulin pump technology for managing gestational diabetes. These devices can provide more precise insulin delivery, making it easier for pregnant women to control their blood sugar levels effectively.
Understanding cellular mechanisms of diabetes
Another key aspect of Yale Medicine’s research is gaining a deeper understanding of the cellular mechanisms of diabetes, including how insulin resistance develops during pregnancy. By unraveling these mechanisms, we can develop more targeted and effective treatments for gestational diabetes.
Overall, Yale Medicine’s comprehensive and research-driven approach to treating gestational diabetes sets it apart as a leader in the field, providing patients with the highest level of care and support throughout their pregnancy.
Can you get gestational diabetes from eating too much sugar?
The risk of gestational diabetes increases with obesity, as excess calories can contribute to weight gain and diabetes. Adopting a healthy diet and lifestyle can help mitigate risks.
Do any foods cause gestational diabetes?
Specific foods don’t cause gestational diabetes, but a healthy diet and regular exercise can lower the risk. Some foods and beverages may influence the likelihood of developing type 2 diabetes.
What puts you at risk of gestational diabetes?
Risk factors for gestational diabetes include being overweight, a history of the condition, having a large baby in a previous pregnancy, family history of diabetes, ethnicity, and advanced maternal age. Screening for gestational diabetes is recommended for at-risk individuals during pregnancy.
In addition to the mentioned factors, other risk factors for gestational diabetes include having polycystic ovary syndrome (PCOS), having a history of gestational diabetes in previous pregnancies, and a sedentary lifestyle. Women with high blood pressure or high cholesterol levels are also at increased risk for developing gestational diabetes.
It is important for pregnant women to maintain a healthy lifestyle, eat a balanced diet, and engage in regular physical activity to reduce their risk of developing gestational diabetes. Regular prenatal check-ups and screenings are crucial for early detection and management of this condition.
How can I prevent gestational diabetes?
While gestational diabetes isn’t always preventable, managing weight, following a healthy diet, and staying active before pregnancy can reduce risks. Additional information on risk reduction is available.
How many women develop it during pregnancy?
Gestational diabetes, while less common than other types of diabetes, is on the rise. With proper support and care, risks can be minimized, and specialized healthcare is accessible.
Gestational diabetes occurs during pregnancy but resolves after childbirth. Proper care can manage the condition, preventing complications for both mother and baby.
Diabetes during pregnancy can have lasting effects, affecting the pregnancy and leading to complications. Lifestyle changes and medications can help manage the condition.
Insulin resistance due to placental hormone production can cause gestational diabetes in some women.
In 2024, an estimated 23.3 million live births (15.6%) experienced high blood glucose during pregnancy. The condition is more prevalent in low-income countries.
Mothers over 45 have a higher risk of hyperglycemia during pregnancy, while children exposed to high glucose levels may face health risks later in life.
Causes and risk factors of GDM
The exact cause of gestational diabetes is unknown, but risk factors include obesity, advanced age, family history of diabetes, and other conditions.
Commons symptoms of GDM
Gestational diabetes often doesn’t show symptoms. However, some women may experience increased thirst and urination, fatigue, blurred vision, nausea, and frequent infections like yeast infections.
Managing GDM
Gestational diabetes can be managed with a combination of lifestyle changes and medication. Most women can control their blood glucose levels by making dietary changes and exercising regularly. Some may need insulin or other medications to manage glucose levels during pregnancy. In most cases, glucose levels return to normal after childbirth and treatment is no longer necessary.
Nutrition for GDM
Nutrition is crucial in managing gestational diabetes. It’s recommended to have a diet rich in vegetables, whole grains, lean proteins, and healthy fats. Eating smaller, more frequent meals throughout the day can help regulate blood sugar levels.
Healthy eating recommendations should consider portion sizes to avoid spikes in glucose levels. Carbohydrates include whole grains, bread, cereal, pasta, rice, starchy vegetables like corn and peas. Avoiding sugary foods and beverages like sodas and fruit juices is advised.
Physical Activity
Regular physical activity helps control glucose levels, prevent excessive weight gain, and reduce complications during pregnancy. Moderate-intensity exercise for at least 30 minutes a day on most days is recommended. Low-intensity exercises like walking, swimming, cycling, and yoga are suitable for pregnant women with GDM.
Early Detection
Early detection of gestational diabetes is crucial for prompt treatment to prevent complications for both mother and baby. High-risk women should be screened during their first prenatal visit, and all pregnant women should be screened between 24 and 28 weeks.
