More people without gluten allergies are turning to low-gluten diets, sparking debate on their value for the general population. Researchers from the University of Copenhagen and international experts have now provided evidence-based insights.
In a rigorous intervention study with healthy Danish adults, a low-gluten, high-fiber diet reshaped the gut microbiome, eased bloating and other GI discomforts, and promoted modest weight loss. These benefits directly linked to shifts in gut bacteria composition and function.
The randomized, controlled crossover trial enrolled 60 healthy middle-aged Danish adults. It compared two 8-week diets—a low-gluten version (2g gluten/day) and a high-gluten one (18g gluten/day)—separated by a 6-week washout on a standard diet (12g gluten/day). Both were matched for calories, nutrients, and total fiber, though fiber sources varied significantly.
Key findings pointed to altered gut fermentation patterns. The researchers concluded that low-gluten benefits in healthy individuals likely stem from reduced wheat and rye fibers, replaced by those from vegetables, brown rice, corn, oats, and quinoa—not gluten reduction alone.
This research indicates that even healthy people may gain from low-gluten eating to address gut issues or support weight management.
