
Root vegetables are often mistakenly avoided on keto diets due to their reputation as “high-carb foods. While some root vegetables are indeed high in carbohydrates, there are several low-carb options that can be enjoyed as part of a keto diet. These include radishes, turnips, rutabagas, and celeriac. Even root vegetables that are higher in carbs, such as carrots, onions, and potatoes, can be included in a keto diet when eaten in moderation. For example, a single medium-sized carrot contains an acceptable four carbs, and small amounts of onions used for seasoning are generally not a problem. Additionally, root vegetables are rich in antioxidants, fiber, and beneficial vitamins, making them a nutritious choice. However, it is important to note that a strict ketogenic diet limits carb intake to fewer than 20 grams per day, so it is crucial to monitor portion sizes and choose lower-carb options when possible.
| Characteristics | Values |
|---|---|
| Root vegetables suitable for keto | Radishes, Onions, Garlic, Jicama, Turnips, Rutabagas, Avocados, Cauliflower, Broccoli, Kale |
| Root vegetables to be eaten in moderation | Carrots, Parsnips, Potatoes, Sweet potatoes |
| Root vegetables to be avoided | Peas, Corn, Beans, Leeks, Butternut squash, Tomatoes |
| Macronutrients to be avoided on keto | Carbohydrates, Protein |
| Macronutrients allowed on keto | Fat |
| Keto root vegetable preparation | Roasted, Steamed, Boiled, Sautéed, Raw, Mashed, Fried |
| Keto root vegetable seasoning | Butter, Lard, Coconut oil, Avocado oil, Ghee, Cheese, Cream, Olive oil |
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What You'll Learn
- Root vegetables like potatoes, carrots, and sweet potatoes are too high in carbs for keto
- Carrots are keto-friendly if eaten in moderation
- Onions are high-carb but can be eaten in small amounts as seasoning
- Radishes, turnips, and rutabagas are low-carb root vegetables
- Root vegetables are full of antioxidants, fibre, and vitamins

Root vegetables like potatoes, carrots, and sweet potatoes are too high in carbs for keto
Root vegetables are edible starchy tubers grown below ground. They are often mistakenly labelled as "high-carb" and avoided. However, some root vegetables are too high in carbs to include in a keto diet. These include potatoes, carrots, and sweet potatoes.
Potatoes are high in lectins, a type of antinutrient that can have negative health consequences when eaten in large quantities over long periods of time. A medium-sized potato contains 37 grams of net carbs, which is significantly more than the recommended 20 grams of carbs per day on a keto diet.
Carrots are another root vegetable that are not low-carb. A cup of raw carrots contains 9 grams of net carbs, but a single medium-sized carrot has a more acceptable 4 grams of carbs. Carrots can be included in a keto diet if enjoyed in moderation, and they make a nice addition to keto bone broth.
Sweet potatoes are also high in carbohydrates. While they are full of powerful antioxidants, fiber, and beneficial vitamins, they are not suitable for a keto diet due to their high carb content.
It is important to note that not all root vegetables are high in carbs. Some examples of low-carb root vegetables include radishes, turnips, rutabagas, and celeriac. Additionally, onions and jicama are relatively high in carbs but are still considered acceptable for keto diets when eaten in moderation.
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Carrots are keto-friendly if eaten in moderation
Root vegetables are generally high in carbohydrates, which are limited on a keto diet. While most root vegetables are too high in carbs to be considered keto-friendly, carrots can be included in a keto diet in moderation.
Carrots are a popular root vegetable that has a range of health benefits. They are low in calories and rich in vitamins and antioxidants, including beta-carotene, vitamin A, and lycopene, which have protective and healing properties. Carrots are also a good source of vitamin K, which is important for skin, hair, and eye health.
However, carrots do contain moderate amounts of carbohydrates, with 9 grams of net carbs per cup. On a keto diet, it is recommended to limit carb intake to 20-50 grams per day, depending on the individual's goals and progress. Therefore, to include carrots in a keto diet, they should be consumed in small portions.
Some lower-carb substitutes for carrots that can be consumed more freely on a keto diet include celery, broccoli, and cauliflower. These vegetables can be eaten raw or cooked and provide a good source of nutrition while helping to maintain a low-carb intake.
While carrots can be a part of a keto diet, they should be enjoyed in moderation to ensure overall carb intake remains within the desired range for ketosis.
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Onions are high-carb but can be eaten in small amounts as seasoning
A ketogenic diet is defined by two things: high-fat and ultra-low-carbohydrate intake. Typically, to access the ketogenic state of ketosis, one must limit their carb intake to 20 grams per day, and up to 60 grams once their body is keto-adapted.
Onions are considered a root vegetable and are therefore higher in carbs. However, they can still be enjoyed in moderation as part of a keto diet. Onions are typically used as a seasoning or added to foods in small amounts, so they can add flavour without contributing too many carbohydrates. For example, it is uncommon to eat an entire cup of onions or an entire onion in one sitting. Green onions or scallions are a great alternative, as they contain about two-thirds fewer carbs than white or red onions. Be mindful of caramelised or sautéed onions, as these are easier to consume in larger quantities.
If you are aiming for a strict ketogenic diet, with fewer than 5% of calories from carbs, it is important to be aware of which vegetables are lowest in carbs. Vegetables with less than 5 grams of net carbs can be eaten freely. For example, cauliflower has 3 grams of net carbs per 100 grams, broccoli has 4 grams, and avocado has 2 grams.
While root vegetables like potatoes, carrots, and sweet potatoes are typically too high in carbs for a keto diet, they can still be enjoyed in moderation. For instance, a single medium-sized carrot has 4 grams of net carbs, which is more acceptable than a cup of raw carrots, which has 9 grams.
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Radishes, turnips, and rutabagas are low-carb root vegetables
Root vegetables are often labelled as "high-carb" and avoided in keto diets. However, there are some root vegetables that are low-carb and can be enjoyed as part of a keto diet. Radishes, turnips, and rutabagas are examples of low-carb root vegetables.
Radishes are a great source of fibre and vitamin C, with a distinctive spicy and sweet taste. They can be enjoyed raw, sliced or diced, and added to a variety of dishes. Radishes have a low net carb content of just 2 grams, making them an excellent choice for keto diets.
Turnips are another low-carb root vegetable and a member of the cruciferous family. They are a good source of vitamin C, fibre, potassium, and manganese. Turnips contain sulfur-containing compounds, which are potent antioxidants that protect cells from oxidative stress. They can be prepared in a variety of ways, including roasting, steaming, boiling, or mashing, and are a tasty and nutritious addition to any meal.
Rutabagas, also known as "yellow turnips," are closely related to turnips and are also low in carbs. They provide even more vitamin C than turnips, making them a nutritious choice for keto diets. Rutabagas can be prepared in similar ways to turnips and are a healthy and delicious option.
While radishes, turnips, and rutabagas are low-carb options, it is important to note that other root vegetables, such as potatoes, carrots, and onions, are typically higher in carbs and should be consumed in moderation on a keto diet. However, vegetables like carrots can still be included in keto meals if enjoyed in smaller portions.
When following a keto diet, it is recommended to limit carb intake to 20 grams per day initially and up to 60 grams once the body has adapted to ketosis. This means that root vegetables, which are often higher in carbs, need to be selected carefully and consumed in moderation to stay within the carb limits.
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Root vegetables are full of antioxidants, fibre, and vitamins
Root vegetables are often associated with being "high-carb" and are therefore mistakenly avoided. However, they are full of powerful antioxidants, fibre, and beneficial vitamins.
For example, beetroot is a root vegetable known for its distinct ruby red colour, but it can also be found in shades of white and purple. The most well-known nutrient found in beetroot is nitrates, a plant compound that can dilate blood vessels, lower blood pressure, and improve sports performance. Radishes, another type of root vegetable, are low in carbs and calories, but impressive in fibre and vitamin C content. They can be enjoyed raw, sliced, or diced, adding a spicy hint of sweetness to a dish.
Turnips, a member of the cruciferous family, are also a great source of vitamin C, fibre, potassium, and manganese. They contain sulphur-based compounds, a type of potent antioxidant that protects cells from oxidative stress. Rutabaga, a cousin of the turnip, provides even more vitamin C and is also part of the cancer-protective cruciferous family.
While root vegetables offer these health benefits, they are still considered high in carbohydrates and antinutrients, which can have negative health consequences when consumed in large quantities over long periods of time. Therefore, it is important to practice moderation when including them in a keto diet.
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Frequently asked questions
Some root vegetables that are keto-friendly include radishes, celeriac, and turnips.
Some keto-friendly non-root vegetables include cauliflower, avocado, broccoli, kale, spinach, and Brussels sprouts.
Root vegetables that are high in carbohydrates and should be avoided on a keto diet include potatoes, sweet potatoes, parsnips, and carrots.
Vegetables that are keto-friendly typically have fewer than five grams of net carbs.











































