Celeriac (celery root) — glycemic index and gestational diabetes guide

Allergen Information

Contains: Celery

Nutrition per 100g

Calories42 kcal
Carbohydrates9.2g
of which Sugars1.6g
Fiber1.8g
Protein1.5g
Fat0.3g
of which Saturated0.1g
Sodium100mg
Glycemic Index35

Fruits & VegetablesStarchy Veggies and Roots

Celeriac (celery root) for Gestational Diabetes

Low GIPotato substituteFiber rich

Celeriac, also known as celery root, is a versatile root vegetable related to celery, parsley, and parsnips. Despite its gnarled, brown exterior, its interior reveals a creamy, white flesh with a complex flavor profile that is earthy, nutty, and reminiscent of celery and parsley. It is prized in many cuisines for its adaptability and is an excellent low-carbohydrate substitute for potatoes. Nutritionally, celeriac is a good source of dietary fiber, vitamin K, vitamin C, phosphorus, and potassium, making it a nutrient-dense addition to any diet.

At a glance

Pregnancy safety

Safe

Blood sugar impact

low

Carbs / 100 g

9.2g

Is Celeriac (celery root) safe with gestational diabetes?

Celeriac is an excellent choice for managing gestational diabetes due to its low carbohydrate content and low glycemic index. It provides the satisfying texture of starchy vegetables like potatoes without causing significant blood sugar spikes. Its high fiber content further aids in slowing down glucose absorption, promoting stable energy levels throughout the day. This makes it a versatile and safe addition to a blood sugar-conscious diet, allowing for culinary variety without compromising glycemic control, which is crucial during pregnancy.

How does Celeriac (celery root) affect blood sugar during pregnancy?

The low glycemic index of celeriac, approximately 35, ensures a slow and steady release of glucose into the bloodstream. Cooking methods like boiling or steaming are ideal as they preserve this low GI profile. Roasting may slightly increase the GI but it generally remains in a safe, low range. Unlike high-GI potatoes, celeriac offers a similar starchy satisfaction without the risk of a rapid glucose surge. The soluble fiber within celeriac is key, as it forms a gel in the digestive tract that physically slows carbohydrate digestion and absorption.

What is a safe portion of Celeriac (celery root) for gestational diabetes?

A suitable portion is about one cup of cubed or mashed celeriac. This amount provides satisfying texture and valuable nutrients without contributing an excessive carbohydrate load. Visually, this portion is roughly the size of your clenched fist. Adhering to this serving size allows you to enjoy the benefits of its fiber and vitamins while keeping the total meal's carbohydrate count well within the strict limits required for effective gestational diabetes management, thus preventing post-meal hyperglycemia.

How should I combine Celeriac (celery root) to manage blood sugar during pregnancy?

To build a balanced, blood-sugar-friendly meal, pair celeriac with a source of lean protein and healthy fats. For instance, serve mashed celeriac alongside grilled chicken breast or baked salmon to ensure a complete macronutrient profile. Adding a drizzle of extra virgin olive oil or a side of sliced avocado will further slow digestion and blunt any potential glucose response. Use celeriac as the primary carbohydrate source in your meal, avoiding pairing it with other starches like rice or bread to maintain optimal glycemic control.

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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