Estimates for India put GDM at roughly 10% to 15% of pregnancies. Women of South Asian origin carry a higher risk than many other groups. Most women with GDM feel perfectly well, which is why I test every pregnant woman instead of waiting for symptoms to appear.
When sugar stays high, the extra glucose passes across the placenta to the baby. Without treatment this raises the chance of a large baby, too much amniotic fluid, and low sugar or breathing trouble in the newborn. For most women, careful control can bring these risks close to those of any other pregnancy.
At Divine Women's Hospital, Gota, I look after women with GDM and women who already had diabetes before pregnancy. That means going through your sugar charts, changing treatment when needed, following your baby's growth on scans and planning the birth. The food advice is planned for a Gujarati home kitchen.
Gestational Diabetes Doctor in Ahmedabad: What My Role Covers
For most women, the gestational diabetes doctor is the obstetrician. Sugar control, the baby's growth and the timing of birth have to be judged together, not by three different people. In my OPD at Divine Women's Hospital, Gota, I bring these parts into one plan. I read your glucometer chart side by side with your food diary. I decide when food changes alone are no longer enough, choose between metformin and insulin, and arrange growth scans from about 28 weeks.
Women who already had type 1 or type 2 diabetes before conceiving need more frequent visits and an early HbA1c. I plan for that from the first trimester, or even before conception if you come to me while planning. If a high sugar was found at another centre, please bring the original lab report, not just the number written on a prescription. Whether it came from a DIPSI, an OGTT or an HbA1c changes how I read it. I consult in Gujarati, Hindi and English, and the family member who does most of the cooking is welcome to sit in on the food discussion.
What Is Gestational Diabetes, and Why Does Sugar Rise?
In simple words, gestational diabetes is the body falling behind on insulin during pregnancy. Hormones made by the placenta make your body respond less well to insulin, mostly in the second half of pregnancy. Normally the pancreas makes up for this by producing more insulin. GDM appears when it cannot keep pace.
I want to be clear about one thing: gestational diabetes does not come from eating sweets, and it is nobody's fault. Your genes, your body weight and the placental hormones all play a part. Because the hormone effect is strongest after 24 weeks, GDM is usually found towards the end of the second trimester. If high sugar shows up in the first trimester, it is more likely to be diabetes that was already there before pregnancy but had not been diagnosed.
Women I Watch More Closely for GDM
Your chance of gestational diabetes is higher if any of these apply:
- South Asian ethnicity - which includes almost every woman in India.
- A BMI above 25, or weight gained before this pregnancy.
- A parent, brother or sister with diabetes.
- PCOS
- GDM in an earlier pregnancy, or a previous baby who weighed more than 3.5–4 kg.
- Age over 30
- Pregnancy through IVF
- A twin pregnancy
Gestational Diabetes Symptoms: Why Most Women Notice Nothing
Most women with GDM have no complaints at all. Thirst, passing urine often and tiredness are part of ordinary pregnancy too, so they are not a reliable guide. Two things can make me suspect it: urine or vaginal infections that keep coming back, and a scan showing a large baby or extra fluid.
When sugar climbs well above the target range, some women do notice changes. These include a dry mouth and thirst that water does not settle, and getting up several times at night to pass urine. Others notice unusual weakness after meals, blurred vision, or weight that stays flat or falls even though appetite is good. Itching or a white discharge from repeated thrush can also appear. None of these is specific to diabetes, which is exactly why I rely on a blood test and not on how you feel.
Gestational Diabetes Test During Pregnancy: DIPSI, OGTT and HbA1c
I advise a sugar test at your first antenatal visit. If it is normal, I repeat it at 24–28 weeks. Women with strong risk factors whose earlier tests were normal may be tested once more at around 32 weeks.
| Test | How it is done | Result that confirms diabetes |
|---|---|---|
| DIPSI single-step test (Government of India, FOGSI) | 75 g glucose drink without fasting; one blood sample at 2 hours | 2-hour value of 140 mg/dL or more |
| IADPSG/WHO 75 g OGTT | Fast overnight; blood samples at 0, 1 and 2 hours | Any one of: fasting 92 or more, 1-hour 180 or more, 2-hour 153 or more (mg/dL) |
| HbA1c or fasting sugar early in pregnancy | One test at the first visit | HbA1c of 6.5% or more, or fasting sugar of 126 mg/dL or more, points to diabetes present before pregnancy |
Gestational diabetes test: in which week is it done?
The main test is done between 24 and 28 weeks, after an earlier check at the first antenatal visit. For the DIPSI test you need not fast. You drink 75 g of glucose dissolved in water over about five minutes, then sit quietly until the 2-hour blood sample. Walking around or eating in between can change the reading. For the OGTT you come after an overnight fast of at least eight hours. If you vomit the glucose drink, tell the lab staff, as the test usually has to be repeated on another day.
Gestational Diabetes Range: Home Sugar Targets I Set
Once GDM is confirmed, you check your sugar at home with a glucometer. At the start this is usually a fasting reading plus one after each main meal. The targets I use are:
- Fasting: below 95 mg/dL
- 1 hour after a meal: below 140 mg/dL
- or 2 hours after a meal: below 120 mg/dL
I go through your readings at each visit, or you can share them with me between visits, so that treatment can be stepped up early if it is needed. When your numbers have been steady for a while, testing can often drop to a few days each week.
Alongside the readings, keep a simple food diary and note what you ate before any high value. The pattern in that diary usually tells us where one small change will help the most.
Gestational Diabetes Diet: Indian and Gujarati Meals That Help
The idea is steady sugar through the day, not going hungry. I suggest three moderate meals with two or three small snacks between them, and at every meal a carbohydrate eaten together with protein and vegetables.
| Meal | Good choices | Better to avoid |
|---|---|---|
| Breakfast | Vegetable poha or upma with sprouts; besan chilla with curd | Plain white bread; sweet tea with biscuits |
| Lunch and dinner | One or two rotlis of whole wheat, bajra or jowar; a large katori of dal or kadhi; sabzi and salad | White rice in more than a small portion |
| Snacks | Roasted chana; a handful of nuts; buttermilk; a small guava or apple | - |
Cut down on sweets, fruit juice, sugar in tea, large helpings of farsan such as fafda or khakhra, and fried snacks. A 10–15 minute walk after each main meal usually brings the after-meal reading down. Gentle activity on most days, such as walking or pregnancy yoga, also helps the body use insulin better. The exception is when I have asked you to rest for another reason, such as bleeding or a short cervix.
Gestational Diabetes Treatment With Medication: When I Add Metformin or Insulin
If your readings are still above target after one to two weeks of food changes and activity, I add medicine. Roughly a quarter to a third of women with GDM need it at some point. Needing tablets or injections does not mean you have failed.
| Treatment | When I use it |
|---|---|
| Food changes and activity | The first step for every woman with GDM |
| Metformin tablets | Mildly raised sugars, especially after meals, in women who tolerate the tablets |
| Insulin injections | Clearly raised fasting sugars, high readings in spite of metformin, or a baby growing fast on scan |
Gestational Diabetes Effects on Baby and Mother, and How We Lower Them
For the baby, poorly controlled sugar can lead to:
- growing too large (macrosomia)
- difficulty delivering the shoulders at birth
- extra amniotic fluid (polyhydramnios)
- low blood sugar after birth
- jaundice
- rarely, stillbirth late in pregnancy
For the mother, it raises the chance of pre-eclampsia, a caesarean delivery and infections.
To keep watch, I check your blood pressure and urine protein at every visit, and I ask you to tell us straight away if your baby moves less. From about 28 weeks I arrange growth scans every 3–4 weeks to follow the baby's size and the fluid around it. Good sugar control, regular scans and a well-timed delivery can lower most of these risks considerably.
When and How Your Baby Is Born With GDM
GDM on its own is not a reason for a caesarean.
- If your sugar is well controlled on diet alone, I usually wait for labour until about 40–41 weeks.
- If you take metformin or insulin, I generally offer delivery between 37 and 39 weeks, depending on how well your sugar is controlled and how the baby is growing.
- If the baby is estimated to be very large - generally above about 4–4.5 kg - we discuss a caesarean.
During labour your sugar is checked regularly, and insulin can be given through a drip if it is needed. After birth, the baby's sugar is checked before feeds through the first day, and I encourage you to start breastfeeding early.
Gestational Diabetes Treatment After Delivery and in Later Years
Most mothers can stop their diabetes medicine soon after the baby is born. A repeat 75 g OGTT at 6–12 weeks after delivery confirms that your sugar has returned to normal.
GDM is also a signal for the future. Women who have had it face up to a seven-fold higher chance of type 2 diabetes later in life, and some studies show about half develop it within 10 years. I therefore advise a sugar test every year. GDM is also likely to come back in a later pregnancy, so it helps to keep a healthy weight, breastfeed, stay active and have your sugar tested early next time. Healthy family meals are good for children born after a GDM pregnancy as well.
My Gestational Diabetes Plan in Five Steps
- Confirming the diagnosisI go through your OGTT or DIPSI result and any early sugar tests, and make sure diabetes from before pregnancy has not been missed.
- Food plan and home testinga practical food plan built on what you normally eat, and a glucometer timetable with your target values.
- Adjusting treatmentmetformin or insulin is added only if readings stay above target, and the dose is reviewed regularly.
- Following the babygrowth scans from about 28 weeks to check size and amniotic fluid.
- Birth and follow-upwe agree the timing and mode of delivery, the baby's sugar is checked after birth, and your postnatal OGTT is booked.
Reasons to See Me About Sugar in Pregnancy
- An OGTT, DIPSI or fasting sugar result above the normal range.
- GDM in an earlier pregnancy, or a previous baby over 3.5–4 kg.
- PCOS, a high BMI, or a parent, brother or sister with diabetes.
- A scan showing a large baby or extra fluid.
- Type 1 or type 2 diabetes, whether you are already pregnant or hoping to be.
- Home sugar readings that keep coming out high.
Urgent Symptoms When You Have Gestational Diabetes
Come to the hospital the same day if you notice:
- sugar below 60 mg/dL with sweating, shaking or confusion while you are on insulin
- repeated readings above 200 mg/dL, or vomiting so that you cannot eat
- your baby moving less than usual
- a severe headache, blurred or disturbed vision, or sudden swelling - these can be signs of pre-eclampsia
- leaking fluid, or regular tightenings, before 37 weeks
For a sugar emergency or any of these signs, do not hold on until your next OPD date. The emergency and labour team at Divine Women's Hospital works through nights and weekends (24×7); ring ahead as you leave home and carry your glucometer and insulin pens with you.
Common Beliefs About Pregnancy Sugar, Corrected
Belief: If I give up sugar completely, I won't need treatment.
Rice, roti, potatoes and fruit raise blood sugar too. How much you eat, and what you eat it with, matters more.
Belief: Insulin will harm my baby, or I will need it for life.
Insulin does not pass across the placenta in any meaningful amount. Most women stop it once the baby is born.
Belief: GDM always ends in a caesarean.
Many women with GDM give birth vaginally. A caesarean is advised for particular reasons, such as a very large baby.
Belief: After delivery, the diabetes is gone for good.
GDM usually settles after birth, but the lifetime risk of type 2 diabetes stays much higher, so a yearly check is needed.
Questions Patients Often Ask Me About Gestational Diabetes
What blood sugar level is normal during pregnancy?
For home checks I aim for a fasting value below 95 mg/dL, and either below 140 mg/dL one hour after a meal or below 120 mg/dL two hours after it. The cut-offs used to diagnose GDM are different and depend on which test you had.
Can gestational diabetes harm my baby?
If sugar stays uncontrolled, the baby can grow too large, the birth can be more difficult, and the newborn can have low sugar or breathing problems. When sugar stays within target and the baby's growth is tracked on scans, most of these babies are usually born well.
Does insulin harm the baby?
Insulin does not cross the placenta in meaningful amounts, and pregnant women have been treated with it for many years. Needing insulin does not mean your diet has failed.
Can metformin be taken in pregnancy?
Metformin is widely used for gestational diabetes and has not been linked with birth defects. It does cross the placenta, so I decide between metformin and insulin for each woman individually.
Can I eat fruit if I have gestational diabetes?
Yes, in moderate amounts. Whole fruit is better than juice, and it is ideally eaten as a snack rather than with a big meal. Mango, chikoo and grapes need small portions.
Can I eat rice if I have gestational diabetes?
A small helping of rice with dal, vegetables and curd is usually fine. Your after-meal readings will show whether that amount suits you.
Does gestational diabetes go away after delivery?
In most women it does, often within days of the birth. You still need a repeat test at 6–12 weeks and a sugar check every year after that.
Will gestational diabetes mean I need a caesarean?
Not necessarily. A caesarean is considered mainly if the baby is estimated to be very large, or for other obstetric reasons.
Why is the DIPSI test done without fasting?
DIPSI was designed for India so that a woman can be tested at any antenatal visit without coming in fasting. It is the test recommended by the Government of India and FOGSI.
Will I get gestational diabetes again in my next pregnancy?
The chance is high - roughly half of women in many studies. Losing weight, staying active and having an early sugar test in the next pregnancy all help.