
The ketogenic diet is a high-fat, moderate-protein, and very low-carbohydrate diet. The diet is gaining popularity due to its potential benefits for weight loss, blood sugar management, and the prevention of cancers and neurodegenerative conditions. When starting a keto diet, it is important to know which vegetables are the lowest in carbs. While meat and most dairy products mainly provide protein or fat, vegetables contain mostly carbohydrates. This means that not all tubers are suitable for a keto diet. Some keto-friendly tubers include rutabaga, a hybrid of cabbage and turnip, and parsnips, an anti-inflammatory veggie.
| Characteristics | Values |
|---|---|
| Type of diet | High-fat, moderate-protein and very low-carbohydrate diet |
| Carbohydrates | 5% to 10% of energy intake is from carbohydrates |
| Net carbs | 20 grams per day, up to 60 grams once keto-adapted |
| Vegetables | Cauliflower, avocado, Broccoli, kale, spinach, Brussels sprouts, cabbage, asparagus, zucchini, onions, tomatoes |
| Fruits | Berries, avocado, tomatoes |
| Dairy | Cheese, Greek yogurt, cottage cheese, butter, cream |
| Meat | Fish, shellfish, eggs, bacon |
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What You'll Learn

Carrots in moderation
The keto diet is a high-fat, low-carbohydrate diet. Carbohydrates are the body's primary source of energy, but on a strict ketogenic diet, only 5% to 10% of energy intake comes from carbohydrates. The reduction in carbohydrates puts the body into a metabolic state called ketosis, where it starts breaking down stored fat for energy.
Carrots are starchy root vegetables that contain carbohydrates. While they are not typically considered keto-friendly due to their relatively high carb content, they can be included in a keto diet in moderation. Most of the carbs in carrots come from soluble fiber, and they are also a good source of vitamin A, a carotenoid that the body converts into a usable form of the vitamin.
When including carrots in a keto diet, it is important to be mindful of portion sizes to stay within the recommended carb intake for keto, which is generally around 20 grams of net carbs per day. This amount can vary depending on individual activity levels and how well the person's body can maintain ketosis with a higher carb intake.
To keep carrot servings keto-friendly, it is recommended to pair them with other low-carb foods, such as adding shredded carrots to a salad or using carrot sticks as a dipper for a high-fat keto-friendly dip. Cooking methods can also impact the carb content, so consider steaming or roasting carrots with butter and spices, or slicing and baking them as carrot chips.
Additionally, there are many other keto-friendly vegetables that can be included in the diet. Leafy greens like lettuce, spinach, and cruciferous vegetables like broccoli, cauliflower, and cabbage are excellent choices. Avocados, zucchini, and green onions are also good options. These vegetables can be prepared in various ways, such as steaming, roasting, or stir-frying, and paired with healthy fats like olive oil, avocado oil, or butter.
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Rutabaga
One way to cook rutabaga is to make keto French fries. First, chop off the ends of the rutabaga, then peel it. Slice it into 1/4-inch thick rounds, and then cut those rounds into sticks. Place the sticks in a big bowl and coat them with avocado oil, sea salt, pepper, and any other spices you like. Set up a baking rack by placing an oven-safe rack on a sheet pan. Lay the fries out in a single layer on the rack, which will allow more airflow to make them crispier. Bake in the oven until they are golden and crisp on the outside, and soft in the centre. You can also cook these rutabaga fries in an air fryer.
You can also make oven-roasted rutabaga. Peel the rutabaga and cut it into cubes. Season the cubes with virgin olive oil, dried thyme, salt, and pepper. Make sure the cubes are completely covered in oil and seasoning. Place the seasoned rutabaga cubes on a baking tray lined with parchment paper, leaving enough space between the cubes to allow hot air to flow between them. Roast in an oven preheated to 395°F (200°C) for 10 minutes or until they start to turn golden. Take the tray out of the oven, toss the cubes, and return them to the oven for another 10-20 minutes or until they are golden brown and fork-tender. Serve immediately.
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Onions sparingly
The keto diet is a low-carb, high-fat diet. It involves reducing your carbohydrate intake to about 5% to 10% of your total energy intake, which puts your body into a metabolic state called ketosis. In ketosis, your body uses fat as its primary energy source instead of carbohydrates. This can lead to weight loss and have other potential health benefits, such as improved blood sugar control and reduced risk of certain diseases.
When it comes to tubers, which are starchy root vegetables, most of them are high in carbohydrates and should be limited or avoided on a keto diet. However, onions are an interesting case. While they are considered a tuber and grow below ground, they can still be included in keto meals in small amounts.
Onions are higher in carbohydrates compared to other keto-friendly vegetables, but because they are strong in flavor, you typically won't need to use many at once. Adding a small amount of chopped onions to your dishes can provide a lot of flavors without significantly increasing your carb intake. For example, you can chop up some green onions or scallions and sprinkle them on top of your salad or other dishes. Just be mindful of how much you're using to stay within your daily carb limit.
It's important to note that caramelized or sautéed onions can be more challenging. These cooking methods make it easier to consume larger amounts of onions, which can quickly increase the carb count of your meal. If you want to include onions in your keto diet, it's best to use them sparingly and opt for raw or lightly cooked preparations.
Additionally, while onions can be a part of a keto diet in limited quantities, there are other vegetables that are more keto-friendly and can be consumed more freely. Leafy greens, such as spinach, lettuce, and kale, are excellent choices. Other low-carb vegetables include broccoli, cauliflower, avocado, and zucchini. These vegetables are not only keto-friendly but also packed with essential nutrients and fiber, making them a healthy addition to your diet.
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Tomatoes sparingly
The keto diet is a high-fat, low-carbohydrate diet. Carbohydrates are the body's preferred source of energy, but on a strict ketogenic diet, about 5% to 10% of energy intake is from carbohydrates. The reduction of carbohydrates puts the body into a metabolic state called ketosis, where the body starts breaking down stored fat into molecules called ketone bodies to use for energy.
Tomatoes are technically a fruit, but they can be eaten on a keto diet, albeit sparingly. This is because tomatoes have a relatively high carbohydrate content. When combined with other foods, eating too many tomatoes may cause you to exceed 20 grams of net carbs per day.
If you are doing a more liberal low-carb diet that allows more than 20 grams of carbs per day, you can eat as many above-ground vegetables as you like. In general, keto-friendly veggies are those with leaves—all types of lettuce, spinach, and other greens are good ketogenic options. Green vegetables tend to be lower in carbs than vegetables with a lot of colour. For example, green cabbage has fewer carbs than purple cabbage, and green bell peppers have fewer carbs than red or yellow peppers.
Below-ground keto root vegetables tend to be much lower in antinutrients than their above-ground counterparts. Featuring occasional below-ground root vegetables in your diet has other benefits, too. Research shows that a diet based around meat, roots, and fruits is consistent with how our ancestors ate. In other words, humans evolved to eat lots of fatty meat, go long periods without eating, and snack on carbs occasionally.
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Fruits like berries and avocados
The keto diet is a very low-carb, high-fat, and moderate-protein diet. It is often undertaken for weight management, but it also has other health benefits. The diet is based on the principle of ketosis, where the body uses fat or ketones as energy instead of carbohydrates.
Avocados are also a popular choice for those on keto. They contain only 1.9 g of carbohydrates and 19.7 g of fat per 100 g. They are also a good source of potassium, calcium, magnesium, and B vitamins. Avocados are also said to reduce levels of "bad" cholesterol and improve heart health. The recommended serving size is around one-third of a medium-sized avocado.
Other fruits that can be eaten on the keto diet include olives, lemons, limes, strawberries, blueberries, and watermelon.
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Frequently asked questions
Technically speaking, tubers are starchy vegetables with high carb counts and should be avoided on keto. However, some below-ground root vegetables like rutabaga, a hybrid of cabbage and turnip, are low-carb options that can be consumed occasionally.
Cauliflower is a versatile substitute for starchy foods like potatoes and rice. Spiralized zucchini, also known as "zoodles," is another popular replacement for pasta in keto meals.
Leafy greens such as lettuce, spinach, kale, and other cruciferous vegetables like broccoli and cabbage are excellent choices. Avocado, green onions, and asparagus are also keto-friendly.
A strict ketogenic diet typically restricts carbohydrates to fewer than 5% of total calories, which equates to about 20 grams of net carbs per day. However, once your body adapts to keto, you can increase your carb intake up to 60 grams.











































