5 nutrition strategies for gestational diabetes

Being diagnosed with gestational diabetes (GDM) can feel overwhelming, especially when it comes to food. GDM is high blood sugar that starts or is first noticed during pregnancy, and it is usually checked between 24 and 28 weeks.¹ Nutrition can play a meaningful role in helping to manage blood sugar levels, and it does not need to be complicated. Here are the basics.

GDM is common and is not a reflection of your efforts or choices. During pregnancy, hormones make it harder for the body to manage blood sugar, and some people need extra support to keep their levels in range.

5 tips to support gestational diabetes

1. Eat regularly

Aim for three moderate meals and two or more snacks across the day, which may include a bedtime snack.¹ Spreading food out helps keep blood sugar steadier than having large meals or long gaps.

2. Keep carbohydrates, and spread them out

Carbohydrates are still important for you and your baby. Very low carbohydrate diets are not recommended in pregnancy.¹ Instead, the focus is on having a consistent, moderate amount of carbohydrate at each meal and snack.

3. Choose high fibre carbohydrates

Choose high fibre, lower glycaemic index (GI) carbohydrates most often, such as whole grains, oats, legumes, wholegrain bread and whole fruit.¹ These are digested more slowly and have a gentler effect on blood sugar.

4. Build balanced plates

Balancing meals and snacks with complex carbohydrates, protein and fibre helps slow down how quickly sugar enters the bloodstream, supporting steadier blood sugar levels.

5. Move most days

Regular physical activity on most days, such as walking, can help with blood sugar control, if it is safe for you.¹ Check with your healthcare team about what is right for your pregnancy.

After your baby is born

GDM usually goes away after birth. However, a follow up glucose test is recommended between 6 weeks and 6 months after your baby is born, as having GDM increases the chance of developing type 2 diabetes later in life.¹ Regular check ups with your GP after that are a good idea too.

Want support with gestational diabetes?

Nula Nutrition can support your nutrition through pregnancy and beyond. The approach is always evidence based and tailored to you. Registered dietitian consultations are available for women's health in Calgary and online across Alberta, including Canmore, Banff, Edmonton, and Cochrane.

Ready to get personalised nutrition support?

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Please note: This post is intended for general educational purposes only and does not constitute personalised medical or dietetic advice. Please follow the advice of your healthcare team, including your doctor, diabetes educator and registered dietitian.

Written by Madison Hows RD APD

References

1. Alberta Health Services, Nutrition Services. Nutrition Guideline: Diabetes in Pregnancy. 2018, updated 2026.