Allergen Information
Contains: Fish
Nutrition per 100g
Sardines for Gestational Diabetes
Sardines are small, oily fish that are nutritional powerhouses, packed with omega-3 fatty acids, high-quality protein, and essential minerals. They are most commonly found canned in oil, water, or various sauces like tomato or mustard. Because the entire fish is often consumed, including the soft, edible bones, they are an exceptional source of calcium and vitamin D. Their rich, savory flavor makes them a versatile ingredient in many dishes, offering significant health benefits in a convenient and affordable package.
At a glance
Pregnancy safety
SafeBlood sugar impact
lowCarbs / 100 g
0gIs Sardines safe with gestational diabetes?
Sardines are an outstanding choice for managing gestational diabetes. With zero carbohydrates, they have no direct impact on blood glucose levels, making them a very safe protein source. Their high content of protein and healthy omega-3 fats promotes satiety and can help stabilize blood sugar when included in a mixed meal. Furthermore, sardines are a natural source of Vitamin D, a nutrient linked to improved insulin sensitivity, which is particularly beneficial during pregnancy.
How does Sardines affect blood sugar during pregnancy?
The glycemic index of sardines is zero, as they contain no carbohydrates, meaning they do not cause a rise in blood sugar on their own. The significant protein and fat content plays a crucial role in blunting the glycemic response of a meal. When consumed with carbohydrates, these macronutrients slow down digestion and the absorption of glucose into the bloodstream. This results in a more gradual and lower blood sugar spike, aiding in overall glucose control and management throughout the day.
What is a safe portion of Sardines for gestational diabetes?
A standard can of sardines, which is typically around three to four ounces, is a perfect portion size for a meal or a substantial snack. This amount provides a robust dose of protein and healthy fats without contributing excessive calories. It is best to choose sardines packed in water or olive oil and to drain them well. Avoid varieties packed in sweet sauces, such as barbecue or teriyaki, as these can contain hidden sugars that will negatively impact blood glucose levels.
How should I combine Sardines to manage blood sugar during pregnancy?
To build a balanced, blood-sugar-friendly meal, pair sardines with high-fiber carbohydrates and non-starchy vegetables. For example, enjoy them on a slice of whole-grain, seedy bread or mixed into a large salad with leafy greens, cucumber, and bell peppers. Another great option is to flake them into a quinoa bowl with roasted vegetables. The fiber from the grains and vegetables works synergistically with the protein and fat from the sardines to ensure a very slow and steady energy release.
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 →