
Lentils are a nutritious food packed with vitamins, minerals, protein, and fiber. They are also a source of prebiotic fiber, which can cause gas and bloating in some people. For this reason, people with IBS may wonder if they can eat lentils on a low-FODMAP diet. The answer is yes, lentils can be eaten on a low-FODMAP diet, even during the Elimination Phase. However, it's important to pay attention to the type of lentil, the preparation method, and the weight of the serving size, as these factors affect the FODMAP content. Canned, drained lentils are generally lower in FODMAPs than dry lentils cooked from scratch. The Monash University FODMAP Diet App can be a helpful resource for determining the appropriate serving sizes for different types of lentils.
| Characteristics | Values |
|---|---|
| Can lentils be eaten as part of a FODMAP diet? | Yes, lentils can be included in a low FODMAP diet, even during the Elimination Phase. |
| How do you prepare lentils for a FODMAP diet? | Canned, boiled, and drained lentils are lower in FODMAPs. Soaking dried lentils overnight can also reduce FODMAP content. |
| What types of lentils are suitable for a FODMAP diet? | Brown, green, red, and Le Puy lentils are suitable for a FODMAP diet. |
| What are the recommended serving sizes for a FODMAP diet? | Recommended serving sizes vary depending on the type of lentil and preparation method. Monash University and FODMAP Friendly smartphone apps provide accurate weight measurements for serving sizes. |
| Are there any potential side effects of eating lentils on a FODMAP diet? | Lentils contain GOS and fructans, which can cause bloating, gas, and sensitivity in some individuals. |
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What You'll Learn

Canned lentils are low FODMAP if rinsed and drained
Canned lentils can be a part of your low-FODMAP diet, even during the Elimination Phase. They are a good source of magnesium, potassium, manganese, phosphorus, iron, and folate. They also offer protein, fiber, and flavor.
Lentils contain both GOS and fructans, which are water-soluble. This is why canned lentils are recommended, as they can be drained of the liquid containing these FODMAPs. It is important to drain the lentils thoroughly in a fine-meshed strainer and then weigh the amount to be consumed or used in a recipe. Canned lentils should also be rinsed well before eating or cooking to remove oligosaccharides, which can be a potential GI symptom trigger.
The FODMAP content of lentils varies depending on the type of lentil, preparation method, and portion size. Monash University has analyzed brown, green, red, and Le Puy lentils for FODMAP content and recommends these varieties during the elimination phase. The Monash University app can help determine the correct portion sizes for different types of lentils, but it is advised to always go by weight rather than volume.
For those with IBS, lentils can cause unpleasant symptoms such as bloating, gas, and sensitivity. It is recommended to start with small amounts of lentils, such as 1-2 tablespoons, and slowly increase them to test your tolerance.
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Dry lentils are high FODMAP
For those suffering from IBS, lentils can cause unpleasant symptoms, and a low-FODMAP diet is often recommended to help identify triggers. The first step is to eliminate certain high-FODMAP foods from the diet, and once triggers are identified, these foods can be slowly and carefully reintroduced. While dry legumes that need to be rehydrated and cooked are high in FODMAPs, canned, boiled, and drained legumes are lower in FODMAPs due to the loss of FODMAPs in the liquid.
It is important to note that the FODMAP content of foods can vary depending on portion size, preparation method, and even ripeness. Additionally, individual tolerance levels vary, so it is important to listen to your body and work with a FODMAP-trained dietitian to determine the best approach for your specific needs.
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Lentils are a good source of magnesium
Lentils are a great addition to a low-FODMAP diet, even during the Elimination Phase. They are flavourful, nutritious, and can be used in a variety of dishes. However, it is important to monitor your portion sizes as FODMAP content can vary depending on the type of lentil, preparation method, and ripeness. Canned, boiled, and drained lentils are generally lower in FODMAPs as the FODMAPs migrate into the liquid, which is then drained away.
Magnesium is an important mineral for overall health. It helps to maintain healthy magnesium levels, which can be achieved through a balanced diet that includes magnesium-rich foods. A diet rich in magnesium can help prevent deficiencies that may lead to symptoms such as nausea, vomiting, weakness, lower appetite, muscle cramps, and numbness.
Lentils are an excellent source of magnesium, alongside other essential nutrients like B vitamins, zinc, potassium, and iron. They are also a great meat alternative due to their high protein content. Additionally, lentils are a good source of health-promoting polyphenols, which have strong antioxidant and anti-inflammatory properties, potentially reducing the risk of heart disease and inhibiting cancer cell growth.
Incorporating lentils into your low-FODMAP diet can be a nutritious and tasty way to increase your magnesium intake and promote overall health and well-being.
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Lentils can cause bloating and gas
Lentils are a nutritious food, packed with B vitamins, zinc, iron, potassium, manganese, phosphorus, and fiber. They are a great source of plant-based protein and are naturally gluten-free. However, they can also cause bloating and gas, especially in people with irritable bowel syndrome (IBS).
Lentils contain high levels of prebiotic fiber, which feeds beneficial bacteria in the large intestine. However, the human gut often finds this type of fiber challenging to break down, so it travels to the large intestine, where bacteria feed on it and produce gas, leading to bloating. The specific type of fiber found in lentils is called Galacto-oligosaccharides (GOS), a FODMAP (fermentable oligo-, di-, mono-saccharides and polyols). FODMAPs are short-chain carbohydrates that can escape digestion and are then fermented by gut bacteria, producing gas as a byproduct.
The amount of GOS and fructans, another type of FODMAP, in lentils varies depending on the lentil variety. Canned, drained lentils have lower FODMAP levels than dry lentils cooked from scratch because FODMAPs are water-soluble, so draining canned lentils removes some of these compounds. Soaking dried lentils overnight before cooking can also help reduce their FODMAP content.
For people with IBS or other digestive issues, it is essential to identify individual trigger foods and manage symptoms through dietary modifications. While lentils can be a trigger for some, they do not need to be eliminated entirely from a low-FODMAP diet. Instead, following recommended serving sizes and preparation methods can help minimize potential adverse effects. The Monash University and FODMAP Friendly smartphone apps provide guidance on low-FODMAP serving sizes for different types of lentils.
Additionally, reducing portion sizes, soaking or sprouting lentils, and limiting spicy foods, caffeine, and alcohol can help alleviate bloating and gas associated with lentil consumption.
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Monash University's app provides accurate serving sizes
The Monash University FODMAP Diet app is a valuable tool for those on a low-FODMAP diet. It provides accurate and detailed information about the FODMAP content of different foods, including lentils, and offers low-FODMAP recipe ideas. The app features a traffic light system, indicating which foods are safe to consume and which should be avoided. It also provides specific food serving sizes, helping users understand how much food can be safely consumed.
The app is based on the research conducted by the team at Monash University, who first developed the FODMAP Diet. Monash University continuously tests foods in their labs to ensure the information in the app is as accurate as possible. The app is updated with new testing methods and research findings, reflecting any changes in FODMAP levels over time.
The Monash FODMAP app is particularly useful for individuals with irritable bowel syndrome (IBS) who are looking to manage their symptoms through diet. It guides users through a three-step low-FODMAP process: elimination, reintroduction, and personalisation. The app helps users identify their FODMAP triggers through systematic reintroduction and provides a symptom diary to track their experiences.
It is important to note that the accuracy of the Monash University app depends on using weight measurements rather than volume measurements. The app provides weight-based serving sizes for lentils, which vary depending on the type of lentil and its preparation method. For example, Monash University's lab-tested low-FODMAP amount for canned and drained brown or green lentils is 1.62 ounces or 46 grams.
In summary, the Monash University FODMAP Diet app is a reliable resource for individuals following a low-FODMAP diet. It offers accurate serving sizes, valuable insights, and practical tools to help manage FODMAP intake and symptoms associated with IBS.
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Frequently asked questions
Yes, lentils can be a part of your low FODMAP diet, even during the Elimination Phase. However, the recommended serving sizes vary depending on the type of lentil and how it was prepared. Canned lentils are generally considered a safer option than dry lentils, as they are lower in FODMAPs.
FODMAP stands for Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols. These are types of carbohydrates that are found in a wide variety of foods, including fruits, vegetables, grains, cereals, nuts, legumes, dairy, and manufactured foods. A low FODMAP diet is often recommended for people with IBS to help identify triggers and manage symptoms.
Lentils are a nutrient-dense food, rich in protein, fiber, vitamins, and minerals such as magnesium, potassium, and iron. They are also naturally gluten-free, low in fat and calories, and high in complex carbohydrates.











































