Butternut squash — glycemic index and gestational diabetes guide

Nutrition per 100g

Calories45 kcal
Carbohydrates11.7g
of which Sugars2.2g
Fiber2g
Protein1g
Fat0.1g
of which Saturated0g
Sodium4mg
Glycemic Index51

Fruits & VegetablesStarchy Veggies and Roots

Butternut squash for Gestational Diabetes

portion control keycomplex carbroast dont boil

Butternut squash is a type of winter squash known for its sweet, nutty taste similar to that of pumpkin. It has a tan-yellow skin and an orange fleshy pulp with a compartment of seeds in the blossom end. When cooked, the flesh softens and becomes creamy, making it incredibly versatile in the kitchen. Nutritionally, it is an excellent source of complex carbohydrates, fiber, and essential vitamins, particularly vitamin A (from beta-carotene), vitamin C, and potassium. Its rich antioxidant content also contributes to overall health and wellness.

At a glance

Pregnancy safety

Safe

Blood sugar impact

medium

Carbs / 100 g

11.7g

Is Butternut squash safe with gestational diabetes?

Butternut squash can be a beneficial addition to a gestational diabetes meal plan due to its fiber and nutrient density. As a starchy vegetable, it does contain carbohydrates, making portion control the most critical factor for blood sugar management. Its complex carbohydrates are digested more slowly than simple sugars, providing a steady release of energy. The key is to balance its inclusion with other food groups to create a well-rounded, glucose-friendly meal. It offers a satisfying way to get essential vitamins without relying on less-nutritious starches.

How does Butternut squash affect blood sugar during pregnancy?

Butternut squash has a moderate Glycemic Index (GI) of around 51, which means it has a relatively gentle impact on blood sugar when consumed in proper portions. The cooking method matters; roasting can concentrate the sugars and slightly raise the GI, while boiling or steaming retains more water and may result in a lower impact. The significant fiber content within the squash plays a crucial role by slowing down the absorption of its natural sugars into the bloodstream. This helps prevent the sharp blood sugar spikes that are critical to avoid with gestational diabetes.

What is a safe portion of Butternut squash for gestational diabetes?

A safe and appropriate portion of cooked butternut squash is about one cup of cubed squash. This amount, roughly the size of a tennis ball, provides valuable nutrients and fiber without delivering an excessive carbohydrate load. Sticking to this portion helps keep the glycemic load of your meal low, minimizing the risk of a post-meal blood sugar spike. Always measure your portion, especially when you are first learning how your body responds, to ensure consistent and predictable blood sugar outcomes after your meals.

How should I combine Butternut squash to manage blood sugar during pregnancy?

To effectively manage blood sugar, always pair butternut squash with a source of lean protein and healthy fat. For example, serve roasted squash alongside grilled chicken breast or a piece of salmon. Drizzling it with olive oil or topping with a few crushed walnuts adds healthy fats, which further blunts the glycemic response. Avoid eating it with other high-carbohydrate foods like potatoes, rice, or bread in the same meal. This balanced plate approach ensures a slower, more controlled glucose release and better overall glycemic control.

Last reviewed: August 31, 2026

Important Safety Information

Every pregnancy is different, and gestational diabetes is managed differently depending on your readings, your medication and how far along you are. The ratings and portions on this page are general information — not a diagnosis, a treatment plan or a medical device — and they cannot see your results.

Low blood sugar:
If you take insulin or diabetes medication, eating less carbohydrate than your team planned for can push your blood sugar too low. Treat a reading below 70 mg/dL (3.9 mmol/L), or symptoms such as shaking, sweating, confusion or a racing heart, with fast-acting carbohydrate immediately and retest after 15 minutes. Never use this page as a reason to skip or shrink a meal you were told to eat.
Carbohydrate and ketones:
Cutting carbohydrate hard to force a number down is not safe in pregnancy — it can produce ketones. Published guidance sets a minimum of 175 g of carbohydrate per day in pregnancy. Readings that stay above target for several days need your care team, not a smaller portion.
Medication and insulin:
The portions here are generic and know nothing about your insulin doses, your metformin, or the steroids given to mature your baby's lungs — all of which change how a meal affects you. Never adjust a dose or a mealtime based on this page.
Food safety in pregnancy:
Blood sugar is not the only thing that makes a food suitable while you are pregnant. Some foods with excellent glycemic numbers still carry mercury, vitamin A, listeria or alcohol risks, and those are judged separately from the ratings shown here. Check your national pregnancy food-safety guidance before adding an unfamiliar food.
What these ratings can and cannot tell you:
Glycemic index values, impact ratings and maximum servings are population averages taken from published tables. Two people eating the same food can get very different readings, so your own meter is the only measurement that describes you. Nutrition figures are indicative per 100 g and vary with brand, ripeness and preparation.

Contact your care team the same day if: your readings stay above target for several days; you have a reading below 54 mg/dL (3.0 mmol/L) or needed someone else's help to treat a low; you test positive for ketones; or your baby is moving less than usual. Seek emergency care for confusion, fainting, repeated vomiting, or a low you cannot bring back up.

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Sources & Editorial Review

Content independently developed by Dalo Labs ApS, informed by the American Diabetes Association's Standards of Care in Diabetes, ACOG's gestational diabetes guidelines, and the IADPSG consensus criteria. Not endorsed by or affiliated with any referenced organization. · Last reviewed: August 2026

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