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JERUSALEM, May 28 — In a major scientific breakthrough, researchers at Israel’s Weizmann Institute of Science (WIS) have identified the key mechanism that allows the human body to tolerate food without triggering an immune response—a discovery that could revolutionize treatment for food allergies and autoimmune conditions.
For decades, scientists have puzzled over how the immune system distinguishes between harmful invaders and harmless food proteins. The answer, according to a new study published by the WIS team, lies in a rare group of immune cells known as ROR-gamma-t cells. These specialized cells orchestrate a complex cascade involving four types of immune cells, ultimately suppressing the body’s primary defenders—CD8 T cells—from mistakenly attacking food as if it were a threat.
“For years, dendritic cells were thought to be the main peacekeepers during meals,” said Dr. Ranit Kedmi of the Weizmann Institute. “But our research shows that even in the absence of dendritic cells, the immune system continues to tolerate food, indicating a more intricate network at play”.
This process, known as “oral tolerance,” is essential for preventing inflammation and allergic reactions to everyday foods. When the system malfunctions, it can lead to serious conditions such as food allergies, celiac disease, and other autoimmune disorders, where the body erroneously attacks harmless substances like peanuts or gluten.
The study also revealed that the immune system can temporarily suspend this tolerance during infections. “It’s like an override switch,” explained the researchers. When the body detects a real threat, it can pause food tolerance to mount a defense, then restore it once the danger has passed.
Experts believe that targeting the ROR-gamma-t pathway could open the door to new therapies for millions suffering from food-related immune disorders. “Understanding why one immune system peacefully accepts a peanut while another declares war on it brings us closer to solving the allergy puzzle,” a lead researcher noted.
This discovery highlights the delicate balance maintained by the immune system and brings hope for future treatments that could reset or repair broken tolerance responses, offering relief to those affected by food allergies and sensitivities.
Disclaimer: This article is based on recent scientific findings from the Weizmann Institute of Science as reported in multiple news sources. The research is still under review and further studies are needed to confirm these results and translate them into clinical treatments. Readers should consult healthcare professionals for medical advice.
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