Completed

Effects of Dietary Gluten on Gastrointestinal Symptoms in Ulcerative Colitis: a Randomised Crossover Trial.

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What is being tested

High gluten diet

+ Gluten free diet

Dietary Supplement
Who is being recruted

Colitis+8

+ Colitis, Ulcerative

+ Colonic Diseases

Over 18 Years
See all eligibility criteria
How is the trial designed

Supportive Care Study

Placebo-Controlled
Interventional
Study Start: March 2024
See protocol details

Summary

Principal SponsorUniversity of Southern Denmark
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: March 11, 2024

Actual date on which the first participant was enrolled.

This study investigates how a gluten-free diet might help people with Ulcerative Colitis (UC) manage their symptoms and improve their overall well-being. UC is a chronic condition that affects the digestive tract, causing symptoms like fatigue and abdominal pain which can severely impact daily life. Some research suggests that gluten, a protein found in wheat and other grains, might worsen inflammation in the gut, leading to more severe symptoms. The goal of this study is to understand whether removing gluten from the diet can alleviate these symptoms and improve the quality of life for UC patients. Participants in the study will undergo two different diet phases: one week on a high-gluten diet and one week on a gluten-free diet, with the order of the diets being randomized. To keep the study unbiased, neither the participants nor the study staff will know which diet is being followed at any given time, thanks to the use of specially controlled granola bars. The study will monitor various factors, including the severity of gastrointestinal symptoms, fatigue levels, and overall health-related quality of life. Biological samples such as blood, urine, and feces will be collected to provide additional data. All information will be kept confidential and managed in line with strict data protection regulations. The study aims to recruit 30 participants to ensure reliable results.

Official TitleEffects of Dietary Gluten on Gastrointestinal Symptoms in Ulcerative Colitis: a Randomised Crossover Trial.
NCT06249763
Principal SponsorUniversity of Southern Denmark
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

15 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Supportive Care Study

These studies explore ways to improve comfort and daily life for people living with a condition. They may focus on easing symptoms, reducing treatment side effects, or supporting overall well-being.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

ColitisColitis, UlcerativeColonic DiseasesDigestive System DiseasesFatigueGastroenteritisGastrointestinal DiseasesIntestinal DiseasesSigns and SymptomsPathological Conditions, Signs and SymptomsInflammatory Bowel Diseases

Criteria

Inclusion Criteria: * Diagnosis: Ulcerative Colitis (UC) * Language: Can read and understand Danish * Treatment: No intention to change dose of, begin, or switch medication and biologic treatment within one month after inclusion * Treatment: Medical and/or biologic treatment type and dose stable for at least 8-16 weeks prior to inclusion depending on the type of treatment Exclusion Criteria: * Age: \<18 years * Severe disease activity defined by 6 or more bloody stools per day and/or night and one of the following: fever, pulse ≥ 90, C-reactive protein (CRP) ≥ 30mg/L by the time of inclusion * Treatment: Have received antibiotic treatment within 4 weeks prior to inclusion * Treatment: Previous operation for UC * Concomitant diagnoses: Coeliac Disease (positive Immunoglobolin A against transglutaminase, TGA-IgA) or any cancer diagnosis * Other: Taking probiotics, are pregnant or breastfeeding, or have nut or wheat allergy

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Placebo
Participants complete both study arms in a crossover design separated by a washout period.

Group II

Experimental
Participants complete both study arms in a crossover design separated by a washout period.

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

Hospital of Southern Jutland

Aabenraa, DenmarkOpen Hospital of Southern Jutland in Google Maps
CompletedOne Study Center