Rhubarb — glycemic index and gestational diabetes guide

Nutrition per 100g

Calories21 kcal
Carbohydrates4.5g
of which Sugars1.1g
Fiber1.8g
Protein0.9g
Fat0.2g
of which Saturated0.1g
Sodium4mg
Glycemic Index15

Fruits & VegetablesFruits

Rhubarb for Gestational Diabetes

low gihigh fiberblood sugar friendly

Rhubarb is a unique perennial plant, botanically a vegetable but treated culinarily as a fruit due to its tart flavor profile. Its crisp, celery-like stalks range in color from rosy red to pale green and are the only edible part of the plant. The large, triangular leaves are toxic due to high concentrations of oxalic acid and must be discarded. Rhubarb is celebrated for its intensely sour taste, which mellows beautifully when cooked, especially in pies, crumbles, jams, and sauces. It provides a good source of Vitamin K, fiber, and antioxidants.

At a glance

Pregnancy safety

Safe

Blood sugar impact

low

Carbs / 100 g

4.5g

Is Rhubarb safe with gestational diabetes?

Rhubarb is an excellent choice for a gestational diabetes diet due to its very low sugar content and high fiber. Its minimal impact on blood glucose makes it a safe way to add flavor and nutrients to your meals. However, its suitability is highly dependent on preparation, as it is often cooked with large amounts of sugar. To reap its benefits, you must prepare it using non-nutritive sweeteners or pair it with other foods to balance its natural tartness. It provides valuable fiber, which aids in glycemic control and digestive health.

How does Rhubarb affect blood sugar during pregnancy?

With an extremely low glycemic index of around 15, raw or properly prepared rhubarb has a negligible effect on blood sugar levels. The fiber content further slows the absorption of any carbohydrates in the meal, preventing sharp glucose spikes. Cooking methods are critical; stewing rhubarb without sugar maintains its low-GI properties. Conversely, using it in a traditional pie with a refined flour crust and significant added sugar will create a high-glycemic dish. Always be mindful of what you add to the rhubarb, as that will determine its ultimate impact.

What is a safe portion of Rhubarb for gestational diabetes?

A generous portion, such as one cup of chopped and cooked rhubarb, is generally safe and beneficial for managing gestational diabetes. This serving size delivers fiber and flavor with a minimal carbohydrate load. This recommendation assumes the rhubarb is prepared without added sugar; if using a sweetener, opt for a zero-calorie alternative like stevia or monk fruit. Always monitor your individual blood sugar response, as tolerance can vary, especially based on what the rhubarb is eaten with.

How should I combine Rhubarb to manage blood sugar during pregnancy?

To create a blood-sugar-friendly meal, pair stewed rhubarb with sources of protein and healthy fats. A fantastic option is to swirl it into a bowl of plain, full-fat Greek yogurt, which provides protein to blunt any glucose response. It also works well as a topping for chia seed pudding or mixed into oatmeal along with a handful of almonds or walnuts. These pairings create a balanced, satisfying, and nutrient-dense meal or snack that supports stable blood sugar levels throughout the day.

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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