Dietary therapy for eosinophilic esophagitis

Area of Science:

• Gastroenterology
• Immunology
• Allergy

Background:

• Eosinophilic esophagitis (EoE) is a chronic, immune-mediated esophageal condition.
• Food antigens are primary triggers, but current allergy tests are suboptimal for identifying them, particularly in adults.
• Established dietary interventions like elemental and 6-food elimination diets are effective but highly restrictive and require multiple endoscopies.

Purpose of the Study:

• To evaluate the efficacy of less restrictive empiric dietary elimination schemes for diagnosing eosinophilic esophagitis.
• To explore a step-up approach for identifying common food triggers and reducing diagnostic burden.

Main Methods:

• Review of current literature on dietary interventions for EoE.
• Analysis of efficacy rates for 6-food, 4-food, and 2-food elimination diets.
• Discussion of a proposed "step-up (2-4-6)" approach.

Main Results:

• Milk, wheat/gluten, and egg are common triggers in the US, Spain, and Australia.
• Less restrictive diets demonstrate good efficacy: 2-food elimination diet (43%), 4-food elimination diet in adults (54%), and in children (64%).
• A step-up approach may expedite diagnosis, reduce endoscopies, and lower costs.

Conclusions:

• Less restrictive empiric elimination diets are effective alternatives for diagnosing EoE.
• A step-up approach could streamline diagnosis and improve patient adherence.
• Further research is needed on standardized reintroduction, novel testing, milk elimination in children, and long-term outcomes.