Allergen Information
Contains: Fish
May contain: Shellfish, Soy, Wheat
Nutrition per 100g
Herbs & Spices › Condiments and Broths
Fish sauce for Gestational Diabetes
Fish sauce is a staple liquid condiment derived from fish or krill that have been coated in salt and fermented for up to two years. It is a cornerstone of Southeast Asian cuisine, particularly in Thai, Vietnamese, and Filipino cooking. While its aroma can be pungent, its flavor is deeply savory, salty, and rich in umami, which adds a complex depth to dishes. The fermentation process breaks down the fish proteins into amino acids, including glutamate, creating its characteristic taste. It serves as both a seasoning during cooking and a base for dipping sauces.
At a glance
Pregnancy safety
SafeBlood sugar impact
lowCarbs / 100 g
1.2gIs Fish sauce safe with gestational diabetes?
Fish sauce is an excellent flavoring agent for a gestational diabetes diet as it contains virtually no carbohydrates and will not impact blood sugar levels. Its primary health consideration is its extremely high sodium content. Excessive sodium can contribute to elevated blood pressure and fluid retention, which are already potential concerns during pregnancy. Therefore, while it is a safe choice from a glucose perspective, it must be used in moderation and accounted for in your daily sodium intake to support overall cardiovascular health.
How does Fish sauce affect blood sugar during pregnancy?
With a glycemic index near zero, fish sauce has a negligible effect on blood glucose, making it a superior choice to sugary marinades or sauces. The cooking method does not alter its glycemic properties. The main risk to blood sugar management comes from the foods it is paired with, not the sauce itself. Using it to season dishes allows you to add significant flavor without relying on carbohydrate-heavy ingredients, which is a key strategy for maintaining stable glucose levels throughout the day.
What is a safe portion of Fish sauce for gestational diabetes?
A strict portion of about one tablespoon is recommended per meal to season a dish for one person. This amount is sufficient to impart a deep, savory flavor without contributing an excessive amount of sodium. When using fish sauce, consider it your primary source of salt for that meal and avoid adding extra salt. Measuring your portion helps you stay mindful of sodium intake while still benefiting from this powerful, low-carb flavor enhancer, which is crucial for managing GD symptoms.
How should I combine Fish sauce to manage blood sugar during pregnancy?
Use fish sauce to enhance the flavor of lean proteins such as grilled chicken, baked fish, or tofu, which helps stabilize blood sugar. It's also ideal for creating dressings for salads packed with non-starchy vegetables and healthy fats like avocado. A dressing made with fish sauce, lime juice, and a touch of stevia can make a large vegetable salad more appealing. This strategy adds robust flavor to a meal without adding carbs, fats, or sugars, perfectly complementing a GD-friendly eating plan.
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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