The Pros and Cons of Sourdough Bread if You Have IBS

This bread lacks a common commercial ingredient

Sourdough bread
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If you have gone gluten-free to better manage your IBS and miss eating bread, you may want to try sourdough. This bread stands out from others because it's missing a key ingredient that tends to aggravate IBS. With this review of the pros and cons of sourdough bread for IBS sufferers, find out what makes this bread so special and why it might actually be an option for you.

What Is Sourdough Bread?

The bread is made through the traditional baking technique of using a sourdough starter.

This is a significant difference from other types of bread, which use commercial yeast to make the dough rise. The sourdough starter is made up of wild yeasts and bacteria (predominantly lactobacilli bacteria), along with flour and water. This preparation results in a natural fermentation process that not only creates gases that cause the bread to rise but also gives the bread its unique texture and flavor.

Why Might Sourdough Be Okay for IBS?

In her classic cookbook, "Eating for IBS," published in the year 2000, author Heather Van Vorous singles out sourdough bread as being an IBS-friendly food. Since that book made its debut, scientific research has come along that backs up her recommendation.

Monash University researchers found that the fermentation process that occurs during the creation of traditionally prepared sourdough bread reduces the levels of the FODMAP fructan. Fructans are carbohydrates that trigger IBS symptoms in some people, but scientists believe that the yeasts in the sourdough starter prevent this reaction from occurring.

In fact, the Monash University Low-FODMAP Diet app identifies two slices of spelt sourdough bread and one slice of oat sourdough bread as being low in FODMAPs, a group of compounds believed to produce symptoms of IBS and related disorders. Unfortunately, it seems as if the fermentation process is not enough to knock out the FODMAPs from sourdough breads prepared with wheat or rye.

When Is Sourdough Bread Not Okay for IBS?

Even with their lower FODMAP levels, there are circumstances in which sourdough bread would not be appropriate for a person who has IBS. If you have any of the following conditions, you might want to refrain from eating this kind of bread.

  • You have celiac disease: Spelt is a wheat product, and many oats are cross-contaminated with wheat and therefore should be avoided.​
  • The sourdough is not prepared traditionally: Many supermarket brands of sourdough are prepared with commercial yeast and therefore have not been through the entire fermentation process that is necessary for lowering fructan levels.​
  • You feel better on a grain-free diet: Some people find that their digestive and overall health is enhanced when they do not consume any type of grain.​
  • You try adding sourdough bread and your symptoms worsen: Every body is different. Although the science may suggest that sourdough bread shouldn't worsen IBS symptoms, this doesn't mean that there aren't other irritants within the bread that will generate a reaction in you.

Sources:

"Frequently Asked Low FODMAP Diet Questions" Monash University Website Accessed September 15, 2015.

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