Is Sourdough Bread Gluten-Free? The Truth About This Common Celiac Myth

Introduction to the Misinformation

Is Sourdough Bread Gluten-Free? The internet is full of misinformation, and when it comes to celiac disease, misleading claims can be harmful. A common myth that continues to circulate is that sourdough bread is gluten-free and safe for celiacs. However, it’s crucial to separate fact from fiction when it comes to dietary restrictions.

Recently, a chiropractor influencer—who also happens to sell dietary supplements—posted a viral video claiming that celiacs can safely eat sourdough bread because its fermentation process supposedly breaks down gluten. While this claim has been circulating for years, it has resurfaced again, misleading many people into thinking they can consume sourdough without risking their health.

But is there any truth to this claim? Can celiacs safely eat sourdough bread? The answer is a resounding no! Let’s break down the science and debunk this common myth once and for all.

Debunking the Myth: Is Sourdough Bread Gluten-Free?

Understanding How Sourdough Bread Is Made

Sourdough bread differs from regular bread because it is made using a fermented starter consisting of flour and water that develop wild yeasts and lactic acid bacteria. This fermentation process gives sourdough its signature tangy flavor and unique texture.

Healthline explains that  some of the gluten in wheat flour is broken down during fermentation, making sourdough slightly easier to digest for some people. However, this does not mean that sourdough is gluten-free—far from it.

Sourdough Still Contains Gluten

Even though the fermentation process reduces gluten levels, sourdough bread made from wheat still contains gluten. A study conducted by Gluten-Free Watchdog tested three different artisanal wheat-based sourdough breads. The results showed that all three contained more than 20 parts per million (ppm) of gluten, the maximum threshold for a food to be legally labeled gluten-free in the United States.

 Even if sourdough bread has less gluten than traditional yeast bread, it still contains unsafe levels for people with celiac disease. Even a small amount of gluten—as little as 10 mg per day—can cause intestinal damage in those with celiac disease.

The bottom line? Regular sourdough bread is not gluten-free and is not safe for celiacs.

The Science Behind Sourdough and Celiac Disease

Does Fermentation Make Sourdough Easier to Digest?

Some scientific evidence suggests that fermentation can make wheat-based products easier to digest. The bacteria in sourdough help break down proteins, starches, and even some inflammatory compounds found in wheat.

However, easier digestion does not mean gluten-free. People with celiac disease cannot eat gluten under any circumstances—regardless of whether it causes immediate symptoms or not.

The Dangers of Hidden Gluten

Some celiacs may feel fine after eating sourdough bread, leading them to believe it is safe. However, this is dangerous because gluten can cause internal damage even in the absence of symptoms.

Beyond Celiac, a leading celiac disease advocacy organization, explains:

“There are rumors and misinformation online about sourdough bread being safe for people with celiac disease and gluten sensitivity. Some brands have even falsely claimed their wheat-based sourdough breads were safe. While the fermentation process decreases the amount of gluten, it still does not reduce it to 20 ppm or less, which is required for gluten-free labeling in the United States. Even if someone with celiac disease does not experience symptoms after eating sourdough bread, intestinal damage may still occur.”

Simply put: if you have celiac disease, eating sourdough bread can still harm your intestines—even if you don’t feel sick immediately.

Addressing Faulty Research Claims

Some people promoting the myth that sourdough bread is safe for celiacs reference a 20-year-old study that claimed some celiacs could tolerate sourdough bread. However, there are several problems with this study:

  1. The study is outdated—It was published two decades ago, and research on celiac disease has advanced significantly since then.
  2. The sample size was tiny—The study only included 17 participants, which is far too small to make reliable conclusions.
  3. The testing method was flawed—Instead of using standard celiac disease testing methods (such as blood tests or endoscopies), the researchers tested intestinal permeability through urine samples, which is not a reliable way to determine gluten damage in celiacs.

Celiac experts today agree that this study does not provide sufficient evidence to suggest that sourdough is safe for people with celiac disease.

Safe Alternatives: Gluten-Free Sourdough Options

Thankfully, if you love sourdough but have celiac disease, you don’t have to give it up completely! There are many safe, gluten-free sourdough options available.

Brands That Offer Gluten-Free Sourdough Bread

Here are some trusted brands that make certified gluten-free sourdough bread:

  • Simple Kneads Organic Sourdough Gluten-Free Bread – A popular option with a delicious, tangy flavor.
  • Schar Deli Style Sourdough Bread – A widely available gluten-free sourdough option.
  • 3×3 Kitchen – A gluten-free bakery in The Bronx, New York, offers a sourdough loaf at local farmers’ markets and online retailers.

Homemade Gluten-Free Sourdough Recipes

If you prefer to bake at home,  plenty of gluten-free sourdough recipes are available. Some great resources include:

  • GF Jules – Offers a popular gluten-free sourdough starter and bread recipe.
  • The Naked Pear Newsletter – Features gluten-free sourdough recipes and a guide on maintaining a gluten-free starter.

With these options, celiacs can safely enjoy the taste of sourdough without risking their health.

Final Thoughts & Call to Action

The myth that sourdough bread is safe for celiacs has been circulating for years, but the science is clear:

  •  Regular wheat-based sourdough bread is not gluten-free nor safe for celiacs.
  •  Even if fermentation lowers gluten levels, it does not remove gluten entirely.
  •  Celiacs must avoid gluten, even if they do not experience immediate symptoms.
  •  Safe gluten-free sourdough options are available from certified brands and homemade recipes.

You’ll know better the next time you see a social media influencer or unqualified health professional claiming that sourdough bread is celiac-safe. Always rely on qualified medical experts and reputable sources for dietary advice.

Have you come across this misinformation before? Have you tried any gluten-free sourdough brands or recipes? Let us know in the comments below!

If you’re interested in exploring more delicious recipes, be sure to check out some of my related recipes on ZiaRecipes.com. Discover how to make Sourdough Dinner Rolls, turn leftovers into Sourdough Discard Tortillas, indulge in sweet Sourdough Cinnamon Rolls, or bake some crispy Sourdough Discard Crackers. Whether you’re looking for savory or sweet options, there’s plenty to explore!

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