Are canned lentils ok for IBS? The definitive guide to digestive comfort

January 8, 2026 •

2 min read

According to Monash University, canned and drained lentils are considered low FODMAP in a specific serving size, making them a safer option for those with Irritable Bowel Syndrome. The canning process helps reduce the fermentable carbohydrates that can trigger IBS symptoms, but proper preparation is still key to ensuring canned lentils are ok for IBS.

Quick Summary

Canned lentils can be suitable for an IBS-friendly diet when properly prepared, as their FODMAP content is lower than dried versions. Draining and rinsing is crucial, and portion control is vital to avoid triggering symptoms. Different lentil types may have varying levels of tolerance.

Key Points

Canned is better for IBS: The canning process reduces the FODMAP content in lentils, making them a more digestible option compared to dried lentils.
Rinse thoroughly: Always drain the canning liquid and rinse the lentils under cold water to wash away a significant amount of water-soluble FODMAPs.
Practice portion control: Stick to the recommended low-FODMAP serving size, typically a 1/4 to 1/2 cup of drained and rinsed canned lentils, to avoid triggering symptoms.
Start small and test tolerance: When reintroducing lentils, begin with a very small portion (1-2 tablespoons) and gradually increase to find your personal tolerance level.
Monitor your symptoms: Individual tolerance varies, so keeping a food diary can help you determine the right portion size for your specific needs.
Combine with low-FODMAP ingredients: Pair canned lentils with other gut-friendly foods like carrots, spinach, and rice to create a balanced meal.
Seek professional advice: A registered dietitian specializing in IBS can provide personalized guidance on how to safely incorporate lentils and other legumes into your diet.

Understanding FODMAPs and Lentils

Lentils contain high levels of FODMAPs, particularly galacto-oligosaccharides (GOS) and fructans, which can cause digestive issues for individuals with IBS. Processing can influence the FODMAP content of lentils.

Why Canned Lentils are a Better Choice for IBS

The canning process involves cooking lentils in water, which helps reduce water-soluble FODMAPs as they leach into the liquid. Draining and rinsing canned lentils removes a significant portion of these compounds.

Comparing Canned vs. Dried Lentils for IBS

Here is a comparison highlighting why preparation is important for IBS, based on information regarding the low FODMAP diet.


Feature	Canned Lentils (Drained & Rinsed)	Dried Lentils (Cooked from Scratch)
FODMAP Content	Significantly lower, as FODMAPs leach into canning liquid.	Higher, especially if not soaked and rinsed extensively.
Preparation	Drain and rinse thoroughly.	Must be soaked overnight, rinsed, and cooked in fresh water to reduce FODMAPs.
Safe Portion Size	Higher tolerance, up to 1/2 cup (46g) according to Monash University.	Much smaller portions tolerated, as low as 1/4 cup cooked for some varieties.
Convenience	Quick and easy, ready to use in minutes.	Requires pre-planning for soaking and a longer cooking time.
Variety	Works well with most canned varieties, including brown and green.	Red lentils (split) may be better tolerated in small cooked portions than whole varieties.

How to Incorporate Canned Lentils into an IBS-Friendly Diet

Start with small portions and gradually increase as tolerated. Monitoring your body's response is important. Tips for incorporating them include rinsing thoroughly, starting with a minimal portion, and using them in small servings in soups and salads. Serving with low FODMAP grains can also be helpful.

Monitoring Your Tolerance

Tolerance to FODMAPs varies individually. A food diary can help identify personal tolerance. For personalized guidance, a registered dietitian specializing in IBS and the low FODMAP diet can provide support.

Conclusion: Making Canned Lentils Work for You

Canned lentils can be included in an IBS-friendly diet with proper preparation and portion control. Draining and rinsing them reduces their FODMAP content. Starting with small portions and monitoring your symptoms allows you to enjoy lentils without discomfort. Listening to your body is essential.

Alternatives to Consider

If canned lentils still cause symptoms, consider other low-FODMAP plant-based proteins. Firm tofu and canned chickpeas (drained and rinsed) are options. Green beans and quinoa also offer similar nutritional benefits with a lower FODMAP load.

For more detailed information on the low FODMAP diet and tested food data, you can visit the official Monash University website, which provides comprehensive resources for managing IBS through diet.

Frequently Asked Questions

Lentils contain high levels of FODMAPs, specifically galacto-oligosaccharides (GOS) and fructans, which are fermentable carbohydrates that can trigger symptoms like bloating, gas, and abdominal pain in sensitive individuals.

During the canning process, water-soluble FODMAPs leach out of the lentils and into the brine. Draining and rinsing the canned lentils removes most of this liquid, significantly lowering the overall FODMAP content.

According to Monash University, a 1/4 to 1/2 cup serving of drained and rinsed canned lentils is typically considered a low-FODMAP portion. However, personal tolerance varies, so it's best to test a small amount first.

Yes, canned lentils are generally better for IBS because the canning process naturally reduces their FODMAP content. Dried lentils must be soaked and cooked with multiple water changes to achieve a similar reduction in FODMAPs.

If you experience symptoms even after eating a small, rinsed portion, you may have a lower tolerance. Continue to track your symptoms, reduce your portion size, or consider a temporary elimination of lentils during a low-FODMAP diet under the supervision of a dietitian.

Yes, while all canned lentils benefit from rinsing, some varieties may be better tolerated than others. The best way to know is by testing small, rinsed portions of different types (e.g., green, brown) and monitoring your personal reaction.

For some individuals, yes. As gut health improves, personal tolerance for FODMAPs may increase. You can gradually test larger portions after completing the elimination phase of the low-FODMAP diet.