Is Sourdough Bread Healthy? Benefits for Gut Health and Digestion
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Are you a fan of sourdough bread? Some people love the tangy flavor, while others find it a bit strong for their taste. While the taste of sourdough bread is up to individual preference, the health benefits are well established. You also can’t deny that a great sourdough loaf is aromatic, crusty, and full of complex flavors. The secret is in the sourdough starter and the slow chemical process that occurs when making bread with a natural yeast starter. Simply put, the entire process relies on fermentation and a healthy sourdough starter.
Sourdough Bread Starter
Using a “levain” or natural yeast as the leavening agent has been used to make bread for centuries, until commercial yeast came on the scene relatively recently in the past 100 to 150 years. With this introduction, the bread-making process was shortened, producing a much more efficiently made, but quite different bread loaf.
So what is a sourdough starter? Comprised of three simple ingredients: flour, water, and a wild yeast/bacteria that kickstarts the fermentation process. A sourdough starter is its own little community of microbes. As the simple ingredients sit together, fermentation occurs. This is the process of converting sugars into products like ethanol and carbon dioxide.
For a bread starter, we see lactic and acetic acid. The real magic happens when the enzymes begin breaking the more complex starches down into smaller units, which are more accessible to yeast and bacteria. Once the microbes digest these sugars, carbon dioxide is created. This gas provides the leavening agent to help the bread rise.
Fermentation Process
The lactic acid produced in the fermentation process is important for several reasons. First and foremost, it helps neutralize phytates. (Phytate or phytic acid is the principal storage form of phosphorus in many plant tissues, especially bran and seeds.) It helps to make more minerals and vitamins (such as iron, calcium, magnesium, and zinc) more available. The fermentation process may partially break down some gluten proteins and carbohydrates, which may make sourdough easier for some people to digest, which may make it easier for some people to tolerate and digest. However, traditional sourdough bread is not gluten-free and is not suitable for people with celiac disease. Sourdough bread also allows for a slower release of glucose into the bloodstream, which helps minimize insulin spikes.
Sourdough Bread and Gut Health
Sourdough bread is made through a natural fermentation process involving wild yeasts and beneficial bacteria. Fermentation helps break down some of the carbohydrates and compounds found in grain, which may improve digestibility for some people.
Usually, baking bread destroys beneficial probiotics; however, the fermentation process creates prebiotics that feed the healthy bacteria already residing in your gut and fuel the large intestine.
Fermented foods have been part of traditional diets for centuries and are often associated with supporting nutrient absorption and digestive health. While sourdough bread is not a cure-all, choosing traditionally prepared fermented foods may be one way to support a gut-friendly diet.
May Support Better Blood Sugar Balance
Some research suggests sourdough bread may produce a lower blood sugar response compared to some commercially produced breads. The fermentation process changes the structure of the starches and may slow digestion. This can help support more stable energy levels and blood sugar balance.
Not All Sourdough Is Equal
You may not realize this, but many store-bought breads labeled “sourdough” are made using commercial yeast and flavorings rather than a traditional long fermentation process. For the greatest benefits, look for authentic sourdough made with a natural starter and a slow fermentation process.
If you haven’t yet jumped on the sourdough bread bandwagon, you can see why there are many redeeming reasons to consider doing so! The great news? If you aren’t someone who finds joy in learning to produce a great sourdough loaf, it’s widely available in many restaurants and stores. Your opportunity to experience this delicious, flaky, chewy powerhouse of taste and health benefits is just a short distance away! You can also create your own starter!
If you’d like to learn more about how digestion, the microbiome, and nutrition work together, join my Gut Health 101 Workshop. If you’re ready to start creating healthier habits that support gut health and overall wellness, grab a copy of The Healthy Habits Challenge.