
The keto diet is a high-fat, moderate-protein, and very low-carb eating pattern. For ketosis to occur, the diet restricts carbs to no more than 5–10% of your daily calorie intake, which equates to 20-50 grams of net carbs per day. As lentils are high in both carbs and fiber, they are generally avoided on a strict keto diet. One cup of cooked lentils provides 36 grams of carbs, which yields 22 grams of net carbs after subtracting the fiber content. This equates to 50% of your daily carb allowance. However, lentils are nutrient-dense and low in calories, offering health benefits such as anti-constipation properties. As a result, those on a more flexible keto diet can include small portions of lentils without hindering ketosis.
| Characteristics | Values |
|---|---|
| Carbohydrates | High |
| Fibre | High |
| Fat | Low |
| Protein | High |
| Calories | Low |
| Nutritional benefits | Thiamine, non-heme iron, folate, niacin, manganese, potassium |
| Health benefits | Anti-constipation properties |
| Keto-friendliness | Not suitable for strict keto diets; suitable for flexible keto diets in small quantities |
| Substitutes | Leafy greens like spinach, kale and cabbage; mushrooms |
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What You'll Learn
- A cup of cooked lentils contains 36 grams of carbs, 22 grams of net carbs
- Lentils are legumes, which are generally avoided on keto due to their high carb content
- Lentils are high in lectins, which can cause inflammation and auto-immune issues
- Lentil soup is a good way to consume lentils in moderation while staying in ketosis
- Lentils are low in calories, which makes them a good option for weight loss

A cup of cooked lentils contains 36 grams of carbs, 22 grams of net carbs
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbs. For ketosis to occur, the diet restricts carbs to no more than 5–10% of your daily calorie intake, which is about 20-50 grams of net carbs per day. Net carbs refer to the number of digestible carbs in a food and are calculated by subtracting the fiber content from the total number of carbs.
Lentils are a type of legume, and legumes are generally avoided on a strict keto diet because they are high in both carbs and fiber. A cup of cooked lentils (approximately 180 grams) contains 36 grams of carbs and 14 grams of fiber. After subtracting the fiber content from the carbs, we are left with 22 grams of net carbs. This amount of net carbs represents 50% of the recommended daily intake of net carbs for someone on the keto diet.
Therefore, while lentils are not recommended for those on a strict keto diet, those on a more flexible keto diet can still consume lentils in smaller portions, such as 1/2 cup (90 grams) or 1/4 cup (45 grams). Additionally, lentils are low in calories and can help control hunger pangs for a long time, making them a good diet option for people following a weight loss plan.
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Lentils are legumes, which are generally avoided on keto due to their high carb content
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbohydrates. To achieve ketosis, a metabolic state in which the body burns fat for energy instead of carbohydrates, the keto diet restricts total carb intake to 20-50 grams per day, with net carbs making up no more than 5-10% of daily calorie intake. Net carbs refer to the number of digestible carbohydrates in a food and are calculated by subtracting the fiber content from the total number of carbs.
Lentils are legumes, which include beans, soy, and chickpeas. Legumes are generally high in both carbohydrates and fiber, and because the keto diet is very restrictive of carbohydrate intake, legumes are typically avoided on a strict keto diet. A cup of cooked lentils (approximately 180 grams) contains 36 grams of total carbohydrates and 14 grams of fiber, resulting in 22 grams of net carbs. Consuming a cup of lentils would account for nearly 50% of the total recommended carb intake for the day on a keto diet.
However, for those on a more flexible keto diet or who engage in regular physical activity, small portions of lentils, such as 1/2 cup or 1/4 cup, can be incorporated into the diet without hindering ketosis. Additionally, lentil soup is another way to consume lentils in moderation while adhering to a keto diet, as the recipe typically calls for one cup of lentils, which can yield four to five servings.
While lentils offer nutritional benefits, such as being a good source of protein and potassium, they also contain lectins, which can cause inflammatory issues in the gut if consumed in high amounts. Therefore, it is essential to consider portion sizes and individual sensitivities when including lentils in a keto diet.
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Lentils are high in lectins, which can cause inflammation and auto-immune issues
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbs. To sustain ketosis, the body of someone on a keto diet burns fat instead of carbs for fuel. Lentils are a type of legume, which is a category that also includes beans, soy, and chickpeas. They are high in both carbs and fiber. A cup of cooked lentils contains 36 grams of total carbs and 22 grams of net carbs.
Lentils are also high in lectins, which can cause inflammation and auto-immune issues. Lectins are carbohydrate-binding proteins that act as a survival mechanism for plants, keeping insects away. They are toxic to insects because they disrupt cell communication. If you are sensitive to lectins or consume too much, you can create an inflammatory condition in your gut, leading to "leaky gut syndrome" and various autoimmune issues. Studies show that lectins and other anti-nutrients like phytic acid can even damage the gut wall, preventing you from absorbing nutrients properly. This is why you want to avoid eating high amounts of lectins. It interferes with ketosis and promotes nutrient deficiencies.
Lectins stimulate class II HLA antigens on cells that do not normally display them, such as pancreatic islet and thyroid cells. This would result in islet cells expressing both class II HLA antigens and foreign antigens together, making them vulnerable to autoimmune attack. Lectins have also been associated with inflammatory responses and autoimmune disorders. However, it is important to note that not all lectins are harmful, and further research is needed to fully understand their effects.
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Lentil soup is a good way to consume lentils in moderation while staying in ketosis
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbs. To stay in ketosis, the diet restricts carbs to no more than 5–10% of your daily calorie intake, which equates to 20-50 grams of net carbs per day.
Lentils are a type of legume, and legumes are generally avoided on a strict keto diet due to their high carb content. One cup (180 grams) of cooked lentils provides 36 grams of carbs, which yields 22 grams of net carbs after subtracting the fibre content. This means that a cup of lentils would use up at least 50% of your daily carb allowance.
However, lentils are also nutrient-dense, providing thiamine, non-heme iron, folate, niacin, and manganese to your body. They are also low in calories, which can help with weight loss, and have anti-constipation properties. Therefore, if you are not on a strict keto diet, consuming lentils in moderation can be a good way to get these health benefits without affecting ketosis.
Lentil soup is a great way to consume lentils in moderation. Most recipes require one cup of lentils, which yields four to five servings. This means that one bowl of lentil soup has only six grams of carbs, allowing you to enjoy the taste and health benefits of lentils without exceeding your daily carb allowance.
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Lentils are low in calories, which makes them a good option for weight loss
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbs. To be in ketosis, the diet restricts carbs to no more than 5–10% of your daily calorie intake, while protein should comprise 15–20% of your daily calories. Net carbs refer to the number of digestible carbs in a food and are calculated by subtracting the fiber content from the total number of carbs.
Lentils are a type of legume, which also includes beans, soy, and chickpeas. They are high in both carbs and fiber, with 1 cup (180 grams) of cooked lentils providing 36 grams of carbs and 14 grams of fiber, yielding 22 grams of net carbs. This is a significant amount of net carbs, and as net carbs are generally restricted to just 25–50 grams per day on a keto diet, including 1 cup (180 grams) of cooked lentils would use up at least 50% of your carb allowance for the day.
However, lentils are low in calories, with a bowl of cooked lentils of approximately 100 grams containing 230 calories. This makes them a good option for weight loss, as they keep hunger pangs in control for a long time and provide a feeling of fullness. For this reason, even though lentils are not typically considered keto-friendly due to their high carb content, they can be included in small quantities in a keto diet without hindering the process of ketosis.
If you are following a strict keto diet, it is recommended to refrain from consuming lentils. However, if your keto diet is more flexible, you can include small portions of lentils, such as 1/2 cup (90 grams) or 1/4 cup (45 grams), without affecting ketosis. Additionally, lentil soup is another way to consume lentils in moderation while staying in ketosis, as the recipe uses a small portion of lentils and provides health benefits.
It is important to note that lentils have a high lectin content, which can create an inflammatory condition in the gut and lead to various autoimmune issues if consumed in high amounts. Therefore, it is recommended to avoid eating excessive amounts of lentils, especially if you are sensitive to lectins.
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Frequently asked questions
Red lentils are a type of lentil, which are legumes, and are therefore high in carbohydrates. Keto diets are very low-carb, so lentils are generally avoided. However, small portions of lentils can be eaten without affecting ketosis.
A cup of cooked lentils (180 grams) provides 36 grams of carbs and 14 grams of fiber. Subtracting the fiber content from the carbs, we get 22 grams of net carbs. This is half of your daily carb allowance. So, a small portion would be less than a cup of cooked lentils.
Leafy greens like spinach, kale, and cabbage are low in carbs, so you can eat as much as you want while staying in ketosis. Mushrooms are another tasty alternative, with only 2 grams of net carbs per serving.
Lentils are nutrient-dense, providing your body with thiamine, non-heme iron, folate, niacin, and manganese. They are also low in calories, which can aid weight loss, and have anti-constipation properties.
Lentils are high in lectins, which can cause inflammation in the gut and lead to various autoimmune issues if consumed in large quantities. They may also interfere with ketosis and promote nutrient deficiencies.











































