
The keto diet is a high-fat, very low-carb, and moderate-protein eating pattern. Most people following a keto diet restrict their carb intake to 25–50 grams of net carbs per day. Lentils are a type of legume that are high in both carbs and protein. A cup of cooked lentils provides 36 grams of carbs, which is 50% of the daily carb allowance for keto dieters. Therefore, lentils are generally avoided on a strict keto diet. However, if you are flexible, you can eat lentils in moderation, such as in lentil soup, or opt for smaller portion sizes like half a cup of cooked lentils.
Can you eat lentils on a flexible keto diet?
| Characteristics | Values |
|---|---|
| Carbohydrates | 1 cup (180 grams) of cooked lentils provides 36 grams of carbs. The keto diet restricts net carbs to 25-50 grams per day. |
| Nutritional value | Lentils are a nutritious, inexpensive source of plant-based protein and fiber. |
| Keto diet alternatives | Leafy greens, mushrooms, broccoli, almonds, and edamame are lower in carbs than lentils and can provide essential nutrients for a well-rounded keto diet. |
| Legumes and keto | Legumes, including lentils, are generally avoided on a strict keto diet due to their high carb content. However, small portions, such as 1/2 cup or 1/4 cup of cooked lentils, can be included in a flexible keto diet. |
| Cyclical Keto | Cyclical Keto is a modified keto diet with high-carb days for workouts and low-carb days for rest. High-carb days provide an opportunity to consume legumes while still maintaining ketosis. |
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What You'll Learn
- Lentils are high in carbs, so they are not suitable for strict keto diets
- Small portions of lentils can be eaten on a flexible keto diet
- Lentil alternatives include leafy greens, mushrooms, and broccoli
- Legumes like lentils may cause digestive issues for some people
- Cyclical keto diets allow for high-carb days and low-carb days

Lentils are high in carbs, so they are not suitable for strict keto diets
The keto diet is an eating pattern that is high in fat, moderate in protein, and very low in carbohydrates. Typically, people following a keto diet restrict their carb intake to 25–50 grams of net carbs per day. Net carbs are calculated by subtracting the fibre content from the total number of carbs.
Lentils are a type of legume, and they are high in both carbs and fibre. A cup of cooked lentils provides 36 grams of carbs, and even when you subtract the fibre content, it still yields 22 grams of net carbs. This means that a cup of lentils would use up at least 50% of your daily carb allowance on a keto diet. Therefore, lentils are generally not suitable for those following a strict keto diet, as they are too high in carbs.
However, if you are following a flexible or cyclical keto diet, it may be possible to include small portions of lentils in your diet. For example, a lentil soup recipe that uses one cup of lentils can yield four to five servings, with each bowl containing only six grams of carbs. This allows you to enjoy the taste and health benefits of lentils without affecting ketosis. Additionally, a 1/2 cup serving of lentils can be a good low-carb legume option, providing a feeling of fullness while still fitting within the daily carb budget.
It is important to note that the keto diet can be challenging to balance, and it often involves eliminating multiple food groups. As a result, those on the diet may be at risk of deficiencies in essential nutrients. Therefore, it is crucial to ensure that your diet remains nutritious and well-rounded, even when restricting certain food groups like legumes.
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Small portions of lentils can be eaten on a flexible keto diet
The keto diet is an eating pattern that is high in fat, very low in carbohydrates, and moderate in protein. The diet aims to keep net carb intake to a minimum, with most people restricting their intake to 25–50 grams of net carbs per day. Net carbs are calculated by subtracting the fibre content from the total number of carbs.
Lentils are a type of legume, which is a category that also includes beans, soy, and chickpeas. They are a nutritious, inexpensive source of plant-based protein and fibre. However, they are also high in carbohydrates, with one cup of cooked lentils providing 36 grams of carbs. As a result, those following a strict keto diet typically avoid lentils due to their high carb content.
However, small portions of lentils can be eaten on a flexible keto diet. For example, a 1/2 cup or 1/4 cup of cooked lentils can fit into a keto diet, depending on your other food choices for the day. Eating lentil soup is another way to consume lentils in moderation while staying in ketosis. Most recipes require one cup of lentils and yield four to five servings, so one bowl has six grams of carbs.
It is important to note that the keto diet can be challenging to balance nutritionally, and those following the diet may be at risk of deficiencies in essential nutrients. Therefore, it is important to include a variety of nutrient-dense foods in your diet, such as nuts, seeds, and avocados. Additionally, those on a keto diet should focus on buying high-quality foods, such as wild seafood, organic eggs, and grass-fed butter and steak.
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Lentil alternatives include leafy greens, mushrooms, and broccoli
Lentils are high in carbohydrates and protein, making them unsuitable for strict keto diets. However, if you're flexible, you can still eat lentils in moderation. For instance, lentil soup can be a good option, as one bowl typically contains only six grams of carbohydrates.
If you're looking for lentil alternatives that are better suited to a keto diet, consider leafy greens, mushrooms, and broccoli. These foods are low in carbohydrates and can be eaten in larger quantities without affecting ketosis.
Leafy greens, such as spinach, kale, and cabbage, are excellent alternatives to lentils. They are very low in carbohydrates and calories, and they are packed with vitamins and nutrients. For example, a cup of spinach contains only 2.5 grams of net carbohydrates, while kale has 3.4 grams per cup. You can easily add leafy greens to omelettes, salads, soups, and more.
Mushrooms are another tasty and keto-friendly option. Common varieties like white button, portobello, oyster, and shiitake mushrooms are naturally low in carbohydrates. For instance, a cup of raw white button mushrooms has only three grams of carbohydrates. Mushrooms are also versatile and can be enjoyed raw or cooked in various dishes, including breakfast, steak, soup, or salad.
Broccoli is a nutritious superfood that should be a staple on the keto diet. With just two grams of net carbs per half cup, it is high in fibre and protein, keeping you full. Broccoli is a versatile vegetable that can be used in numerous dishes, including stews, soups, and keto makeovers of your favourite meals.
In summary, while lentils may be enjoyed in moderation on a flexible keto diet, leafy greens, mushrooms, and broccoli are excellent alternatives that are lower in carbohydrates and can be consumed more freely. These alternatives provide vital nutrients, fibre, and versatility in your keto meal planning.
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Legumes like lentils may cause digestive issues for some people
Legumes like lentils are a nutritious food choice, being low in fat and high in protein and fiber. However, they may cause digestive issues for some people. Firstly, lentils contain antinutrients, such as trypsin inhibitors and phytic acid, which prevent some nutrients, proteins, and amino acids from being absorbed. Phytates, for example, interfere with the operation of enzymes essential for digestion, such as pepsin and amylase. These negative effects can be reduced by properly soaking and cooking the lentils.
Secondly, lentils are high in fiber, which can be good for lowering cholesterol and preventing an increase in blood sugar levels. However, if your body is unable to break down the fiber, it can lead to bacteria that causes cramping and gas pains, resulting in stomach discomfort and bloating. This is because lentils are also high in raffinose, a type of oligosaccharide that the human body lacks the enzyme to break down within the digestive tract. Instead, raffinose ferments in the intestines, leading to gas and bloating.
Thirdly, raw lentils, like other legumes, contain a protein called lectin, which binds to the digestive tract and can cause toxic reactions such as diarrhea and vomiting. Lectins can also lead to long-term issues, such as the inability to absorb vitamins and minerals properly, food allergies, and arthritis. Cooking or sprouting lentils breaks down lectins, making them safe to eat.
Lastly, lentils are a good source of potassium, but too many lentils can cause hyperkalemia in people with poor kidney function. Symptoms of hyperkalemia include vomiting, fatigue, irregular heartbeat, and difficulty breathing. Therefore, it is important to consult a doctor before introducing lentils into your diet to ensure you do not experience any negative side effects.
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Cyclical keto diets allow for high-carb days and low-carb days
The keto diet is an eating pattern that's high in fat, moderate in protein, and very low in carbs. Typically, a keto diet restricts carb intake to 25–50 grams of net carbs per day.
Lentils are high in both carbs and protein, so they are not ideal for strict keto dieters. However, if you're flexible, you can eat lentils in moderation. A cup of lentils provides about 36 grams of carbs, which is about half of your daily carb allowance on a keto diet. Eating lentil soup is a great way to consume lentils in moderation while staying in ketosis.
Cyclical keto diets, also known as carb cycling, are a variation of the standard keto diet. They involve adhering to a standard keto diet protocol 5–6 days per week, followed by 1–2 days of higher carb consumption. These "refeeding days" replenish your body's depleted glucose and glycogen stores, which is especially beneficial for those seeking muscle growth and improved exercise performance.
During the standard keto days of a cyclical keto diet, your carb intake is typically restricted to under 5%, with healthy fats delivering 65-90% of your total calorie intake, and proteins making up 10-30%. On the high-carb days, you can consume 150 grams of carbs if you're eating 2000 calories daily, and even more if you're very active.
While the standard keto diet may not be suitable for everyone, the cyclical variation provides more flexibility, allowing you to strategically incorporate carbs and potentially enhancing your exercise performance.
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Frequently asked questions
Yes, you can eat lentils in moderation if you're on a flexible keto diet. A cup of lentils has 22 grams of net carbs, which is half the daily carb allowance on a keto diet.
You can eat lentils in small portions, such as 1/2 cup or 1/4 cup of cooked lentils, or lentil soup.
Leafy greens like spinach, kale, and cabbage, as well as mushrooms and broccoli, are low-carb alternatives to lentils on a keto diet.











































