A gestational diabetes diagnosis can feel frightening — especially when you're already navigating pregnancy. I want to reassure you: with the right support, most women manage GDM very well through diet alone, and go on to have healthy pregnancies and babies.
What is gestational diabetes?
Gestational diabetes (GDM) occurs when pregnancy hormones interfere with insulin's ability to regulate blood glucose. It's diagnosed during pregnancy — usually between weeks 24-28 — and typically resolves after birth. It doesn't mean you had diabetes before pregnancy, and it doesn't mean your baby will have diabetes. But it does need to be managed carefully to protect both you and your baby.
Do I have to give up carbohydrates?
This is the question I hear most often, and the answer is no. Carbohydrates are an important source of energy during pregnancy, and eliminating them is not safe or necessary. What matters is the type, portion and timing of carbohydrates. Choosing low GI carbohydrates — wholegrains, legumes, most fruits, dairy — and distributing them evenly across the day helps keep blood glucose levels stable.
What should a GDM meal look like?
I encourage my clients to build meals around a simple plate principle:
- Half the plate — non-starchy vegetables (salad, broccoli, zucchini, spinach)
- A quarter of the plate — quality protein (chicken, fish, eggs, legumes, tofu)
- A quarter of the plate — low GI carbohydrate (basmati rice, sweet potato, wholegrain bread, pasta)
- Include a healthy fat — avocado, olive oil, nuts
Eating 3 regular meals and 2-3 snacks helps prevent blood glucose spikes and dips. Don't skip meals — this is especially important in pregnancy.
Which foods should I limit?
Foods that cause rapid blood glucose spikes are worth limiting — not eliminating, but being mindful of. These include white bread, jasmine rice, sugary drinks, fruit juice, lollies, cakes and biscuits. You don't need to avoid fruit, but eating it with a protein source (like yogurt or nuts) helps blunt the glucose response.
What about breakfast?
Breakfast is often the trickiest meal for GDM — morning blood glucose tends to be most sensitive. Many women find they need a lower-carbohydrate breakfast compared to other meals. Eggs with vegetables, Greek yogurt with a small amount of low GI cereal, or avocado on sourdough with protein are good starting points. I work closely with each client to find what works for their individual readings.
After the baby arrives
Most women's blood glucose returns to normal after delivery, but having had GDM significantly increases your long-term risk of Type 2 diabetes. I always encourage follow-up testing at 6-8 weeks post-partum, and I'm happy to support ongoing lifestyle changes that reduce that risk.