A Crohn's Disease Diet to Reduce Symptoms of Crohn's Disease

Study Overview
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Brief Summary
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A 16-week randomized, pilot study to determine if an elimination diet reduces symptoms of Crohn's disease. Sixty (60) adult patients (18-75 yrs) with a mild or moderate Crohn's Disease Activity Index (CDAI) of 150-450, will be recruited through the GI practices at Johns Hopkins University. Patients agree not to be on any other major treatments, with the exception of consistent/stable doses of 5-aminosalicylate (ASA) drugs/other medications during the course of the study and will obtain their physician's permission.They will be divided into a treatment and standard diet group: thirty (30) patients will be on the Crohn's Disease Diet (primarily an anti-inflammatory diet that is an elimination diet - gluten-free, casein-free based with limited carbohydrate) and thirty (30) patients will be given the Dietary Guideline recommendations and similar dietary counseling attention. To assess the clinical efficacy and tolerance of the trial population, patients will be monitored by two office visits (at 0 and 12 weeks) by visits with the Clinical Research Unit (CRU) registered dietitians (RDs) at 0, 6, 12, and 16 weeks (4 weeks after the end of the study) for blood and dietary data collection. Clinical endpoints will be Crohn's disease Activity Index (CDAI) scores (remission < 150; mild = 150-220; moderate = 220-450; severe = 450+), C-Reactive Protein (CRP) values (0-0.8 mg/L), sedimentation rate /(male: 15-20 mm/hr, female: 20-30 mm/hr)/, possibly interleukin-6(/normal value: <10pg/ml)/, Overall Quality of Life (QOL) through the Inflammatory Bowel Disease Questionnaire (IBDQ), Dudley IBD Symptom Questionnaire (DISQ) surveys, and Brown's Gastrointestinal Quality of Life (QOL) Questionnaire, and health care costs measured by a health care cost questionnaire.

Official Title
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The Relationship of a Crohn's Disease Diet in Reducing Symptoms of Crohn's Disease, Improving Quality of Life, and Decreasing Related Health Care Costs.

Conditions
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Crohn's Disease

Intervention / Treatment
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* Other: Elimination Diet
* Other: Dietary Guidelines for Americans


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Between 18 and 75 years of age with any gender. Between 150-220 or moderate Crohn's Disease with a CDAI between 220-450. Not a smoker. No current signs or symptoms of severe, progressive or uncontrolled renal, gastroenterological, hepatic, hematological, endocrine, pulmonary, cardiac, neurological or cerebral disease. Understand and be able to adhere to the dosing and visit schedules; and agree to record symptom severity scores, any medications or dietary supplements, and adverse events accurately and consistently in a daily diary. Agree during the study to use only the designated therapy, however, patients will qualify for the study if they are on a 3-month stable dose of 5-ASA or immunomodulators and there is a limited change in medication dosage no minimize biasing the results. Agree that you have not previously followed diets where you have eliminated an allergen, lactose, gluten or major food group for the purpose of reducing Crohn's disease symptoms within the last year. Agree not to use any oral medications, dietary supplements, herbal treatments, diet therapies within three weeks of the onset of the trial or during the study. During the study agree to use only the designated therapy, however, patients will qualify for the study if they are on a 3-month stable dose of 5-aminosalicylic acid (ASA) or immunomodulators and there is a limited change in medication dosage no minimize biasing the results. Willing to follow the diet during the study and to weigh themselves weekly. Exclusion Criteria: Have extensive colonic, ileal or ileocolonic resection, ileostomies or colostomies with ileal pouch. Experiencing severe weight loss (if % of weight change within 1 week >2% or 1 month >5% or 3 months >7.5% or 6 months > 10%) or severely malnourished (if < 74% of usual body weight). Pregnant, lactating woman or desire to become pregnant during the study. [ ] [ ] Patients receiving prescribed oral nutrition and/or intravenous nutrition. Presence of alcohol, drug abuse, or smoking (cigarette or other).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Elimination Diet<br>thirty (30) patients will be on the Crohn's Disease Diet (primarily an anti-inflammatory diet that is an elimination diet - gluten-free, casein-free based with limited carbohydrate) | Other: Elimination Diet<br> <br> |
| Active Comparator: Dietary Guidelines for Americans<br>The DASH eating plan is based on 1,600, 2,000, 2,600 and 3,100 calories. | Other: Dietary Guidelines for Americans<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| CDAI score | Clinical endpoints will be Crohn's disease Activity Index (CDAI) scores (remission < 150; mild = 150-220; moderate = 220-450; severe = 450+), | 16 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| CRP | C-Reactive Protein (CRP) values (0-0.8 mg/L) | 16 WEEKS | 
| sed rate | sedimentation rate (male: 15-20 mm/hr, female: 20-30 mm/hr) | 16 weeks | 
| Quality of Life | Score on short inflammatory bowel disease questionniare (SIBDQ) and Brown's GI Quality of Life measure | 16 weeks | 
| Symptom improvement | Score of DISQ | 16 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Elimination Diet, Crohn's disease