Dietary additives may worsen colitis – study tests clean eating
NCT ID NCT05743374
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether removing certain food additives (like carrageenan and polysorbates) from the diet can improve symptoms and gut health in people with moderately active ulcerative colitis. About 70 participants will be randomly assigned to either a normal healthy diet or one that avoids these additives for one month. Researchers will measure inflammation and gut bacteria changes to see if the special diet helps control the disease.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 70 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2024
- Expected to finish
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Dec 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Ulcerative colitis, * Moderately active * Stable medication Exclusion Criteria: * Severe disease * Recent surgery * Proctitis * Pregancy * Treatment with antibiotics * Difficulties in understanding the information about the study * Multimorbidity that makes it impossible to participate
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Region Skåne
RECRUITINGMalmö, Skåne County, 21428, Sweden
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Other studies related to the condition(s) this trial covers.
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