Miso Broth — glycemic index and gestational diabetes guide

Allergen Information

Contains: soy

May contain: gluten

Nutrition per 100g

Calories15 kcal
Carbohydrates2.2g
of which Sugars1g
Fiber0.5g
Protein1.1g
Fat0.5g
of which Saturated0.1g
Sodium350mg
Glycemic Index15

Herbs & SpicesCondiments and Broths

Miso Broth for Gestational Diabetes

low glycemichigh sodiumprotein pairingumami flavor

Miso broth is a foundational element of Japanese cuisine, created by dissolving miso paste in water or dashi. Miso itself is a fermented paste made from soybeans, salt, and a fungus called Aspergillus oryzae (kōji). This fermentation process imparts a deep, savory, and complex flavor known as umami, making the broth rich and satisfying. As a fermented food, unpasteurized miso contains beneficial probiotics that can support gut health. It serves as the base for the classic miso soup but is also a versatile ingredient for marinades, glazes, and other savory dishes.

At a glance

Pregnancy safety

Safe

Blood sugar impact

low

Carbs / 100 g

2.2g

Is Miso Broth safe with gestational diabetes?

Miso broth is generally an excellent choice for managing gestational diabetes due to its very low carbohydrate content and negligible impact on blood sugar. Its savory umami flavor can enhance meals without adding sugar or significant calories, providing a satisfying taste experience. The primary consideration is its high sodium content, which should be monitored carefully, especially if there are concerns about blood pressure or fluid retention. Overall, it provides a comforting and flavorful base for building a nutrient-dense, glucose-friendly meal.

How does Miso Broth affect blood sugar during pregnancy?

The glycemic index of miso broth is very low because it is primarily water, salt, and only trace amounts of protein and carbohydrates from the paste. It does not cause a blood sugar spike and can be consumed freely from a glucose management perspective. The fermentation process may even contribute to better gut health, which is linked to improved insulin sensitivity. To preserve its beneficial compounds, it is crucial not to boil the broth after the miso paste has been added, though this does not alter its low glycemic impact.

What is a safe portion of Miso Broth for gestational diabetes?

A standard serving of about one cup of miso broth is a safe and appropriate portion for a gestational diabetes meal plan. This amount provides substantial flavor and hydration without contributing significant carbohydrates or calories. When preparing your meal, use this broth as a base and focus on the additions, such as a palm-sized portion of protein and two handfuls of leafy greens. The broth itself does not need strict limitation, but be mindful of the sodium by choosing lower-sodium miso paste when possible.

How should I combine Miso Broth to manage blood sugar during pregnancy?

Miso broth serves as an ideal liquid base for creating a balanced, blood-sugar-friendly meal. Enhance its nutritional value by adding sources of lean protein like firm tofu, edamame, shredded chicken, or a soft-boiled egg. Incorporate plenty of non-starchy vegetables such as spinach, bok choy, mushrooms, and scallions for added fiber, vitamins, and minerals. A small amount of seaweed, like wakame, can also add important minerals without impacting carbohydrates. This combination of protein and fiber will significantly blunt any potential glucose response and promote satiety.

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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