About this trial
The purpose of this study is to test the effect of an anti-inflammatory diet tailored for patients living in the United States with Crohn's Disease (CD) on clinical symptoms and disease inflammation and to identify biomarkers of response to dietary therapy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Documented diagnosis with Crohn's Disease from medical records.
Ages 16-75
Disqualifiers
Diagnosis of Ulcerative Colitis (UC).
Prior J pouch or diversion
Recent inflammatory bowel disease (IBD) related hospitalizations in the last 4 weeks
Clostridium difficile or enteric infections in the last 4 weeks
Trial design
Crossover
Treatments tested in this trial
Catered Anti-Inflammatory Diet
BehavioralParticipants will receive a fully catered anti-inflammatory diet for 8 weeks, with meals delivered twice weekly. The diet is designed to provide \>25 g fiber/day, a \<3:1 n-6:n-3 fatty acid ratio, and \<30% of total calories from fat, and excludes red meat, processed meats, fried foods, emulsifiers, artificial sweeteners, food colorings, and other ultra-processed ingredients. Participants will also receive weekly remote sessions with a registered dietitian focused on dietary adherence, meal customization, grocery shopping, food affordability, and basic cooking skills.
Diet Guidance for Usual Diet
BehavioralParticipants will continue consuming their self-selected usual diet for 8 weeks. During this period, participants will receive weekly remote sessions with a registered dietitian focused on safe food handling, food preparation and cooking practices, and general nutrition education. Participants will also receive grocery gift cards to support food purchasing and to maintain equivalent contact time and participant engagement across study periods. No specific dietary pattern, food restrictions, or nutrient intake targets will be prescribed during this phase.
Treatment groups
Trial outcomes
Primary outcomes
Participants Achieving Crohn's Disease Activity Index (CDAI) Clinical Response
Clinical response is defined as a ≥70-point reduction from baseline in the Crohn's Disease Activity Index (CDAI). The outcome is the percentage of participants who achieve this response following the dietary intervention.
Participants Achieving Fecal Calprotectin (FC) Reduction
Reduction is defined as a \>50% decrease from baseline in fecal calprotectin (FC). The outcome is the percentage of participants who achieve this reduction.
Secondary outcomes
Participants Achieving Crohn's Disease Activity Index (CDAI) Clinical Remission
Clinical Remission is defined as achieving a Crohn's Disease Activity Index (CDAI) score of \<150. The outcome is the percentage of participants who achieve this score.
Sponsors and contacts
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University of Miami
Lead sponsor
United States Department of Defense
Collaborator