Causes, complications, and treatment of gestational diabetes

In recent years, gestational diabetes rates have increased significantly due to the rise in unhealthy lifestyle habits and overconsumption of processed foods, which contribute to obesity and insulin resistance. These factors, combined with the hormonal changes that naturally occur during pregnancy, can lead to elevated blood sugar levels in expectant mothers.

In this article, we highlight the key symptoms of gestational diabetes, its effects on both mother and baby, essential tests to monitor blood sugar levels, and the best foods to help you manage this condition safely.

What Is Gestational Diabetes?

Gestational diabetes is a temporary condition characterized by elevated blood glucose levels during pregnancy, typically between 24–28 weeks, caused by reduced insulin production.

It does not necessarily mean the woman had diabetes before pregnancy, nor does it confirm she will develop chronic diabetes later. However, it requires proper management to control blood sugar and reduce the risk of complications for both mother and baby.

What Are the Symptoms of Gestational Diabetes?

Most women with gestational diabetes do not experience noticeable symptoms, and it’s often diagnosed through routine screening in the second trimester.

If symptoms do appear—usually around the seventh or eighth month—they may include:

1. Excessive thirst
2. Increased hunger and overeating
3. Frequent urination
4. Fatigue
5. Blurred vision

What Causes Gestational Diabetes?

Gestational diabetes occurs when glucose builds up in the blood either due to:

1. The pancreas not producing enough insulin, or
2. The body's cells becoming resistant to insulin, which is common in pregnancy.

During pregnancy, hormonal changes increase insulin resistance to ensure enough glucose is available for the growing baby. If the pancreas cannot meet the increased insulin demand, blood sugar levels rise, leading to gestational diabetes.

Weight gain during pregnancy can also contribute to greater insulin resistance, further increasing the risk.

Who Is at Risk of Gestational Diabetes?

Several risk factors increase the likelihood of developing gestational diabetes, including:

1. Family history of diabetes
2. Previous gestational diabetes
3. Lack of physical activity
4. Polycystic ovary syndrome (PCOS)
5. Being overweight or obese before pregnancy
6. Ethnicity (Asian, Hispanic, or darker-skinned populations are more at risk)
7. History of miscarriage
8. High blood pressure or high cholesterol
9. Previous baby with birth defects or stillbirth
10. Prediabetes (elevated blood sugar not yet classified as diabetes)
11. Previous baby weighing more than 9 pounds (4 kg)
12. Twin pregnancy
13. Use of certain medications, like corticosteroids
14. Heart disease

How Do I Know If I Have Gestational Diabetes?

Since symptoms are often absent, undergoing regular prenatal testing is essential.

If you have any of the above risk factors, inform your doctor early in the pregnancy to begin monitoring your blood sugar and avoid complications.

What Is the Gestational Diabetes Test?

The gestational diabetes test measures blood glucose levels and is usually performed between weeks 24–28 of pregnancy, unless risk factors warrant earlier testing.

There are two main test methods:

One-Step Glucose Tolerance Test (75g)

1. Fast for 8 hours.
2. Drink a glucose solution containing 75g of glucose.
3. Blood sugar is tested fasting, 1 hour, and 2 hours after consumption.

Two-Step Oral Glucose Tolerance Test (OGTT)

1. No fasting required initially.
2. Drink a 50g glucose solution.
3. Blood is tested after 1 hour.
4. If blood sugar ≥130–140 mg/dL, a follow-up test is done:
5. Fast beforehand
6. Drink a 100g glucose solution
7. Blood sugar is measured at fasting, then after 1, 2, and 3 hours

What Is Considered Normal Blood Sugar During Pregnancy?

Normal values for gestational diabetes testing include:

1. Fasting glucose: <95 mg/dL
2. 1 hour after eating: <180 mg/dL
3. 2 hours after eating: <120 mg/dL

For glucose tolerance tests:

1. After 75g glucose (1 hour): <180 mg/dL
2. After 75g glucose (2 hours): <153 mg/dL
3. After 100g glucose (1 hour): <180–190 mg/dL
4. After 100g glucose (2 hours): <155–165 mg/dL
5. After 100g glucose (3 hours): <140–145 mg/dL

When Is Gestational Diabetes Diagnosed?

Gestational diabetes is diagnosed if blood sugar levels meet or exceed the following:

What Are the Complications of Gestational Diabetes?

If left unmanaged, gestational diabetes can lead to complications for both mother and baby.

Risks for the mother:

1. Depression
2. Preeclampsia (high blood pressure during pregnancy)
3. Cesarean delivery
4. Developing type 2 diabetes in the future

Risks for the baby (especially in the 8th month):

1. Premature birth
2. Stillbirth
3. Breathing difficulties
4. Excessive growth and high birth weight
5. Low blood sugar after birth
6. Higher risk of childhood obesity or type 2 diabetes
7. Jaundice
8. Birth injuries (e.g., shoulder dislocation)

How Is Gestational Diabetes Treated?

Treatment depends on blood sugar levels. Many cases can be managed with:

1. Healthy eating
2. Regular physical activity

In some cases, insulin injections may be needed. Your doctor will tailor the dosage based on your meals, timing, and exercise.

Doctors recommend aerobic exercise for 30 minutes a day, 5–7 days per week, along with routine blood sugar monitoring.

What Foods Help Lower Gestational Diabetes?

A balanced diet plays a key role in managing blood sugar. Include:

1. Complex carbohydrates (digested slowly):
2. Brown rice
3. Whole grains
4. Vegetables
5. Low-sugar fruits
6. Legumes and fiber
7. Healthy fats:
8. Olive oil
9. Avocados
10. Nuts
11. Lean proteins, tailored to pregnancy stage:
12. First trimester: ~46g/day
13. Second trimester: ~71g/day
14. Sources: fish (except tuna and swordfish), lean meats, poultry

Tips:

1. Avoid processed and fast foods
2. Eat small meals frequently

Can Gestational Diabetes Be Prevented?

Gestational diabetes cannot always be prevented, but these practices reduce your risk:

1. Exercise regularly
2. Eat a healthy, balanced diet
3. Avoid excessive weight gain; lose excess weight before pregnancy

Final Thoughts

Are you planning a pregnancy and concerned about gestational diabetes? Don’t worry! All you need is a healthy lifestyle and regular prenatal checkups to monitor and manage potential risks. With the right approach, you can ensure a safe pregnancy for both you and your baby.

If you still need to consult a doctor regarding this condition, you can easily book an appointment through Vezeeta