Scientists Discover How the Body Learns to Tolerate Food

Every time we eat, the body performs a remarkable task called oral tolerance—the immune system recognizes food as safe rather than attacking it. A new study led by researchers at Stanford University has uncovered key protein signals that help the immune system make this decision.

The research was published in Science Immunology. Scientists identified small segments of food proteins, known as epitopes, from corn, wheat, and soybean. These epitopes interact with immune cells called regulatory T cells, which help the body tolerate food instead of triggering an allergic reaction.

The study also found that these regulatory T cells mainly operate in the gut, where they either maintain a calm immune environment or reduce inflammation when needed. Understanding these mechanisms may help researchers develop new therapies for food allergies.

Scientists believe that future treatments could potentially train the immune system to tolerate common allergens, offering hope for people living with food allergies.

09-03-2026