Peanut Butter — glycemic index and gestational diabetes guide

Allergen Information

Contains: Peanuts

May contain: Tree Nuts

Nutrition per 100g

Calories597 kcal
Carbohydrates22.3g
of which Sugars5.9g
Fiber8g
Protein22.5g
Fat51g
of which Saturated10g
Sodium17mg
Glycemic Index14

Nuts, Seeds & ButtersNut Butters

Peanut Butter for Gestational Diabetes

Portion ControlHealthy FatsPair with FiberNo Added Sugar

Peanut butter is a food paste made primarily from ground, dry-roasted peanuts. It is nutritionally dense, offering a significant source of plant-based protein, healthy monounsaturated fats, and fiber. Commercially, it is available in several forms, from 'natural' versions containing only peanuts and salt to conventional types with added hydrogenated oils, sugar, and emulsifiers. This versatility makes it a staple in many diets, but the nutritional quality can vary greatly depending on the brand and processing methods used.

At a glance

Pregnancy safety

Safe

Blood sugar impact

low

Carbs / 100 g

22.3g

Is Peanut Butter safe with gestational diabetes?

Peanut butter is a beneficial food for managing gestational diabetes, provided you choose an unsweetened variety and practice strict portion control. Its combination of protein, fiber, and healthy fats helps to promote stable blood glucose levels. The key is to avoid versions with added sugars or high-fructose corn syrup, as these can undermine its low-glycemic benefits. When used correctly, it can be a satisfying and nutrient-dense addition to your diet that helps manage hunger and blood sugar.

How does Peanut Butter affect blood sugar during pregnancy?

The impact of peanut butter on blood sugar is minimal due to its very low glycemic index, typically around 14. The high fat and fiber content significantly slows the digestion and absorption of its carbohydrates, preventing sharp spikes in blood glucose. However, this advantage is only present in natural, unsweetened peanut butter. Conventional brands with added sugars can have a more pronounced effect on blood sugar, so carefully reading labels is absolutely critical for effective glucose management.

What is a safe portion of Peanut Butter for gestational diabetes?

A proper portion of peanut butter is one to two level tablespoons, which visually equates to about the size of a golf ball. This serving size provides a good balance of healthy fats and protein without contributing excessive calories, which is crucial for healthy weight gain during pregnancy. Over-consuming peanut butter can easily lead to excess calorie intake, so using measuring spoons is a wise strategy to ensure you are staying within a healthy range for your meal plan.

How should I combine Peanut Butter to manage blood sugar during pregnancy?

To maximize its blood sugar-stabilizing effects, pair peanut butter with high-fiber carbohydrates. Excellent choices include apple slices, celery sticks, whole-grain crackers, or a slice of sprouted whole-grain toast. The protein and fat from the peanut butter will blunt the glycemic response from the carbohydrate, leading to a more gradual rise in blood sugar. Avoid pairing it with refined carbohydrates like white bread, sugary jams, or rice cakes, which can lead to a faster glucose spike.

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.

By using this guide, you agree to our Terms and Conditions.

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

Track your meals with SugarCurve

Log this food, track your blood sugar, and get personalized guidance — all in the app.

Start Free Trial