Gestational Diabetes Diet: What You Should Eat and What to Avoid

August 2024 · 6 minute read

Pregnancy can be both an exciting and daunting time. During these 40 weeks, your body makes incredible changes to accommodate your growing baby. Your blood volume doubles, you grow an entirely new organ (the placenta), and your glucose metabolism shifts to provide more energy for the baby. This natural transformation often goes off without a hitch, but sometimes there can be complications. 

One common condition resulting from pregnancy is gestational diabetes. Approximately 8% of mothers are diagnosed with gestational diabetes. The risk increases to almost 16% in mothers over 40.1 Gestational diabetes occurs when your pancreas cannot make sufficient insulin, which can result in high blood pressure and type 2 diabetes for the mom and other serious health concerns for the baby.2

What Causes Gestational Diabetes?

During pregnancy, your body alters how it handles glucose so your baby has the fuel to support its rapid development. To effectively route glucose to your little one, your body produces hormones like progesterone, cortisol, and prolactin, making your cells more insulin-resistant.3 

This decrease in maternal insulin sensitivity preserves glucose molecules and transfers them through the placenta to the baby. As the mother’s cells become more insulin-resistant, the pancreas is required to produce more insulin. If the pancreas can’t keep up with the increased demand for insulin, gestational diabetes develops. Fortunately, when hormones subside after giving birth, most women’s insulin and blood sugar levels return to normal. 

How To Treat Gestational Diabetes With a Healthy Diet and Nutrition

In addition to pregnancy-related hormones, your diet plays a role in your body’s glucose metabolism and insulin production. Eating a balanced diet high in fiber, high-quality protein, and healthy fat can support a healthy pregnancy and prevent health complications for you and your baby. 

Gestational Diabetes Food List 

Ideally, you want to aim for foods that help balance your blood sugar and insulin levels. Here are some foods to focus on:

Protein 

Protein won’t spike your blood sugar and helps you feel full and satisfied by decreasing hunger hormones like ghrelin.

Your protein needs significantly increase during the second and third trimesters, so try incorporating these healthy options into all your meals and snacks:

Non-starchy vegetables 

Incorporating a wide array of colorful vegetables into your diet while pregnant is important. Rich in fiber, vitamins, minerals, and phytonutrients, they can balance your blood sugar and optimize your health.

Green veggies rich in iron help support your baby’s development

Red veggies high in lycopene help reduce oxidative stress and inflammation in the placenta4

Fiber-rich veggies help to minimize blood sugar spikes

Healthy fats 

Healthy fats are an essential part of any diet but are even more important when you’re a pregnant woman. Omega-3 fatty acids support proper brain development in babies and can reduce the risk of preterm labor for mothers.5 

Here are good sources of healthy fats:

Complex carbs 

Carbohydrates are a great energy source (and you need a lot of energy when pregnant!). With gestational diabetes, it’s important to prioritize complex carbs, as they are digested and absorbed more slowly and will have less effect on your blood sugar. 

Here are some examples of complex carbs:

Grains

Legumes

Fruit

Vegetables

Foods to Avoid with Gestational Diabetes 

Although you’re likely to experience cravings during pregnancy, you still want to be mindful of your eating. If you’ve been diagnosed with gestational diabetes, this is even more crucial. 

Here are the foods you should limit or avoid altogether to better manage your blood sugar:

Sweets

Foods high in added sugar will send your blood glucose soaring. If you have these treats, don’t eat them on an empty stomach, which can further raise your blood sugar.

Simple carbs

These types of carbohydrates are broken down quickly in your body, which spikes your blood sugar and can leave you feeling tired and hungry again soon after:

Hidden sugars 

Processed foods contain artificial sweeteners and hidden sugars, so carefully read food labels. Be sure to check the grams of sugar and the serving size. Here are some of the top foods with hidden sugars:

5 Tips for Managing Gestational Diabetes 

Gestational diabetes can be an intimidating diagnosis; however, there are lifestyle changes you can make to manage it more easily. 

Here are our top tips for keeping your blood sugar in check:

Eat Healthy

Focus on the fiber-rich foods mentioned above and limit sugar and simple carbs.

Exercise

Physical activity (particularly after meals) can lower blood sugar and improve insulin sensitivity.

Manage Stress

When stressed, our bodies release hormones that can cause high blood sugar levels. Try to manage your stress through meditation, yoga, or breathwork.

Take Your Meds

If you’ve been prescribed medication like metformin or insulin, take it as directed.

Talk to Your Doctor

Work closely with your healthcare provider to determine the best options for you.

Gestational Diabetes Meal Plan

Below is an example of a typical healthy meal plan for gestational diabetes:

Breakfast: Limit carbohydrates to 15 to 20 grams for this day's first meal. Ideas for breakfast include:

Lunch: Remember that your plate should contain half of non-starchy vegetables, a quarter of lean protein, and a quarter of carbs. Some lunch ideas include:

Dinner: 

Snacks: 

When You Should Reach Out to a Professional

Gestational diabetes typically develops in the second trimester, and expectant mothers are tested between the twenty-fourth and twenty-eighth weeks of pregnancy.6 If you’ve had gestational diabetes during previous pregnancies or have a family history, your healthcare team may test you sooner. If test results indicate gestational diabetes, talk to your doctor and registered dietitian about how to best manage your blood sugar.

Learn More About Healthy Nutrition with Signos’ Expert Advice.

Signos incorporates cutting-edge research and the proven power of continuous glucose monitoring to help you lose weight and reach your health goals. Not sure if Signos is right for you? Take this quiz to find out! Interested in learning more about nutrition and healthy eating habits? Check out more articles on our blog.

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