04/11/2026
People have relied on bread as a staple food for millennia. Evidence from archaeology shows that humans have been baking some form of bread for over 5,000 years, and flatbreads likely appeared even earlier in human history.
In ancient times, bread-making was a straightforward, time-intensive process. Grains were stone-ground into flour, combined with water and a bit of salt, then allowed to ferment naturally over many hours or even days. Wild yeasts and beneficial bacteria from the environment or a maintained starter culture slowly worked on the dough. This extended fermentation wasn't just about rising—it actively transformed the grain.
The long, natural process broke down some of the gluten proteins and starches, making the final loaf gentler on the digestive system for many individuals. It also lowered levels of certain compounds in wheat, like phytic acid, that can interfere with nutrient absorption or trigger gut discomfort. As a result, traditional breads were often more tolerable, even for people with sensitive stomachs.
Fast-forward to today, and the story of bread has changed dramatically.
Most supermarket loaves and commercial bakery products are made using high-speed industrial methods. Dough is mixed, proofed, and baked in a matter of hours rather than days. Manufacturers rely on fast-acting commercial yeast, along with a cocktail of enzymes, emulsifiers, dough conditioners, and preservatives to achieve consistent texture, longer shelf life, and maximum efficiency. The focus is on volume, uniformity, and cost rather than tradition.
The wheat itself has evolved too. Over the past century, modern wheat strains have been selectively bred for higher yields, stronger gluten networks, and better performance in mechanical baking equipment. While these changes help produce taller, fluffier loaves that hold up well in factories, they may come at a cost for human digestion. The gluten in today's wheat is often more concentrated and structurally different from older varieties.
Many experts now suspect that the surge in reported bread-related digestive issues isn't primarily because humans have suddenly developed widespread gluten intolerance. Instead, it could stem from how bread is made and what has been done to the grain.
One key factor is the group of carbohydrates called FODMAPs, particularly fructans found naturally in wheat. In sensitive people, these short-chain carbs can ferment in the gut and cause bloating, gas, and abdominal pain. Traditional long-fermented sourdough significantly reduces fructan content through the action of microbes, which may explain why many individuals who struggle with ordinary bread can enjoy authentic sourdough without problems.
Another point of discussion involves agricultural practices. Modern wheat farming often includes the use of herbicides like glyphosate for w**d control and sometimes for drying the crop before harvest. While regulatory bodies maintain that residue levels are safe, some researchers and consumers question whether trace amounts, combined with other modern farming inputs, could play a role in gut irritation or heightened sensitivity for certain people. The scientific debate on this continues, with evidence on both sides.
The bottom line is that contemporary bread bears little resemblance to what our ancestors ate. Ancient loaves relied on time, natural microbiology, and minimal ingredients. Today's versions prioritize speed, scalability, and shelf stability through technology and additives.
For a growing number of people, this shift appears to make a real difference. Those who experience discomfort with standard commercial bread frequently report being able to tolerate traditionally fermented sourdough, breads made from heritage or ancient grains (like einkorn or emmer), or loaves produced with slower, more artisanal methods.
Ultimately, the rise in bread sensitivities may have less to do with our bodies suddenly turning against wheat and more to do with how dramatically the wheat—and the bread we bake from it—has been altered over the last several decades. The food has changed. Our digestive systems, shaped over thousands of years, may simply be responding to a very different product.
