Diet Advice for Diabetes in Pregnancy

Why Food Choices Matter

When you have diabetes in pregnancy — whether it started before pregnancy or was diagnosed during it — what you eat has a direct effect on your blood sugar. Good nutrition is the first and most important tool for keeping your blood sugar in a healthy range, for you and your baby.

The Basics of a Healthy Eating Pattern

There's no single "diabetic diet." What's recommended is a balanced pattern built around:

• Vegetables and fruit
• Whole grains (instead of refined/white grains where possible)
• Beans, peas, and lentils
• Nuts and seeds
• Fish and other lean protein
• Healthy fats, including omega-3 fats found in fish

Try to avoid diets that cut out an entire food group — for example, very low-carb or carb-free eating. Cutting carbs too aggressively can backfire: your body may compensate by burning more fat, which can actually make blood sugar control harder and isn't better for your baby's growth.

How Much to Eat

As a general guide, pregnant women need at least:

• Carbohydrate 175 g / day
• Protein 71 g / day
• Fibre 28 g / day

Note that these are minimums, not targets to stay at. Your dietitian or doctor will help you find the right amount for you.

Spacing Your Meals

Eating 3 meals and 2-3 snacks through the day — rather than 1 or 2 large meals — helps keep your blood sugar steadier and avoids the spikes that come from eating a lot of carbohydrate at once. If you're on mealtime insulin, keeping your carbohydrate intake consistent from day to day makes it much easier for you and your doctor to get your insulin doses right. See our Carbohydrate Counting and Insulin Guide for how to do this.

Foods to limit

• Processed and packaged foods
• Fatty red meat
• Sugary foods and sweetened drinks (juice, soda, sweetened tea)

Movement helps too

Regular physical activity — such as a 30-minute walk, 5 days a week (about 150 minutes total) — helps your body use insulin more effectively and supports healthy blood sugar control. Always check with your doctor about what's safe for you.

After the baby is born

Diabetes in pregnancy doesn't end your risk — up to 1 in 3 women with gestational diabetes will have prediabetes or diabetes at their postpartum check. Keep up the healthy eating habits you've built, and make sure to attend your postpartum glucose screening (usually 6–12 weeks after delivery).