Gestational diabetes is not your fault — and it is manageable. With awareness, early testing, healthy eating, regular activity, and close follow‑up, you can protect your health and give your baby the best possible start.
Across India, 13–23 per cent of pregnant women are diagnosed with gestational diabetes, usually between 24 and 28 weeks. The term may sound alarming, but the condition is both common and manageable. Most women go on to have healthy pregnancies and healthy babies.
Gestational diabetes simply means that your body is finding it harder to control blood sugar levels during pregnancy. Once the baby is born, the condition usually disappears — but it does need attention while you are pregnant.
Why does gestational diabetes happen?
During pregnancy, the placenta produces hormones that help the baby grow. Some of these hormones, however, make it harder for insulin — the hormone that moves glucose from the blood into the body’s cells — to do its job. This is called insulin resistance.
Most women compensate by producing more insulin. But when the pancreas cannot keep up, blood sugar levels rise, leading to gestational diabetes.
It is not fully understood why some women develop it, and others do not, but certain factors increase the likelihood.
Who is more likely to develop it?
Moderate‑risk factors include:
• Ethnicity: Asian, Indian subcontinent, Middle Eastern, non‑white African
• Higher body weight before pregnancy
High‑risk factors include:
• Gestational diabetes in a previous pregnancy
• Family history of diabetes
• Age above 35
• Polycystic ovarian syndrome
• Previous large baby (over 4.5 kg)
• Certain medications
These factors do not guarantee you will develop gestational diabetes — they simply mean you should be more vigilant.
How is it diagnosed?
Most women have no symptoms. That is why routine screening is essential.
The standard test is the Pregnancy Oral Glucose Tolerance Test (POGTT), done between 26 and 28 weeks. After fasting, your blood is tested, you drink a glucose solution, and your blood is tested again at one and two hours.
If the values are above the normal range, gestational diabetes is diagnosed.
In some situations, a glucose challenge test (a 50‑gram drink followed by a single blood test) is done first. If abnormal, it is followed by the full POGTT.
Women at high risk may be tested earlier in pregnancy and again at 24–28 weeks.
Why does it need treatment?
Uncontrolled gestational diabetes can affect both mother and baby. The good news is that keeping blood sugar in the normal range dramatically reduces complications.
Possible effects on the baby
• Excessive birth weight (macrosomia), which can make labour more difficult
• Prematurity if early delivery becomes necessary
• Breathing difficulties, especially if born early
• Low blood sugar after birth due to high insulin levels
Possible effects on the mother
• Preeclampsia
• Higher chance of needing induction or caesarean section
• Higher risk of gestational diabetes in future pregnancies
• Increased risk of type 2 diabetes later in life
These risks sound worrying, but they are significantly reduced with proper care.
How is it managed?
The goal is simple: keep blood glucose levels within a healthy range. This is achieved through four pillars — healthy eating, physical activity, monitoring, and medication when needed.
Healthy eating
A balanced diet helps stabilise blood sugar and nourishes your growing baby. Focus on:
• Fruits and vegetables
• Whole grains
• Lean proteins
• Healthy fats
A dietician can help create a personalised plan. Pregnancy is not the time to lose weight, but it is the time to eat smart.
Physical activity
Exercise helps your body use insulin more effectively. Aim for 30 minutes of moderate activity most days — walking, swimming, and cycling are excellent options.
On days when you move less, your blood sugar may be higher. Consistency matters.
Monitoring blood glucose
You will be asked to check your blood sugar four to five times a day using a small finger‑prick device. This helps your healthcare team understand how your body is responding.
Medication
Some women manage well with lifestyle changes alone. Others need tablets or insulin. These medications do not harm the baby and help keep blood sugar in the safe range.
Your diabetes team will guide you throughout.
Planning the birth
If your gestational diabetes is well controlled, you can expect a normal, full‑term birth. If the baby is growing larger than expected, your doctor may recommend extra scans and possibly induction of labour.
A caesarean section may be needed in some cases — just as it may be for women without gestational diabetes.
After the baby arrives
Once the placenta is delivered, the hormones that caused insulin resistance to disappear. Most women no longer need medication.
Your baby’s blood sugar will be monitored for the first 24–48 hours. Breastfeeding early and often helps stabilise the baby’s glucose levels.
Some babies may need short‑term care in a special nursery, depending on their condition.
Looking ahead
Gestational diabetes is temporary, but it is also a warning sign. You should have a repeat glucose test 6–12 weeks after delivery to confirm that your levels have returned to normal.
In the long term:
• You have a 30 per cent chance of gestational diabetes in your next pregnancy
• You have up to a 50 per cent chance of developing type 2 diabetes within 10–20 years
Healthy eating, regular activity, and maintaining a healthy weight can significantly reduce this risk.
