Individualized Targeted Exclusion Diet Based on Confocal Laser Endomicroscopy Does Not Improve Irritable Bowel Syndrome Symptoms: A Randomized Controlled Crossover Trial.

Targeted exclusion diets based on confocal laser endomicroscopy do not significantly improve irritable bowel syndrome symptoms, with response rates of 42% versus 36%.

• Why it matters: Understanding whether CLE-identified food reactions can guide effective dietary interventions is crucial, as current methods lack specificity and may lead to unnecessary restrictions, impacting patient quality of life.
• What they did: A double-blind, controlled crossover trial involving IBS patients and healthy controls used CLE to identify mucosal reactions, then tested real versus sham food exclusions over four-week periods, assessing symptom changes.
• The result: The study found no significant difference in symptom improvement between real and sham diets, and mucosal alterations were common even in healthy volunteers, indicating CLE's limited utility in pinpointing culprit foods for IBS.