Mediterranean diet may ease arthritis in kids
NCT ID NCT06474546
First seen Jun 27, 2026 · Last updated Jul 30, 2026 · Updated 2 times
Summary
This study looks at whether a Mediterranean-style diet can improve arthritis symptoms in children by changing the bacteria in their gut. Fifty-four children aged 8-18 with juvenile idiopathic arthritis will follow the diet for 8 weeks, with an option to continue for 4 more weeks. Researchers will collect stool and blood samples, along with diet and symptom reports, to see if the diet helps and if gut changes are linked to improvement.
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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 54 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2025
- Expected to finish
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Oct 2028
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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8 to 18 years
- 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: * Ages 8-18 years * Diagnosis of JIA (excluding systemic JIA, enthesitis-related arthritis, and rheumatoid factor (RF) positive polyarthritis) as per International League of Associations for Rheumatology (ILAR) criteria. (For this feasibility study, there will be no requirement for any particular level of disease activity.) * Subjects on stable treatment - i.e., any medical treatment with disease-modifying antirheumatic drugs (DMARDs) and/or systemic or intraarticular corticosteroids, has been unchanged for 8 weeks, and is unlikely to change for 12 weeks as judged by the treating physician. * Willingness to provide stool samples. * English or French fluency adequate to answer the study questionnaires, and participate in diet instruction, as judged by the enrolling physician. Exclusion Criteria: * Documented specific food allergies, celiac disease. * Co-morbidities that might impact the tolerability of the study diet, e.g., type I diabetes, peptic ulcer disease, etc.
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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
4 sites. 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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Centre Hospitalier Universitaire Sainte-Justine
RECRUITINGMontreal, Quebec, H3T 1C5, Canada
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Children's Hospital of Eastern Ontario (CHEO)
ACTIVE_NOT_RECRUITINGOttawa, Ontario, K1H 8L1, Canada
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London Health Sciences Centre
RECRUITINGLondon, Ontario, N6A 5W9, Canada
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McMaster Children's Hospital
RECRUITINGHamilton, Ontario, L8N 3Z5, Canada
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The Hospital for Sick Children
ACTIVE_NOT_RECRUITINGToronto, Ontario, M5G 1X8, Canada
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University of Manitoba
RECRUITINGWinnipeg, Manitoba, R3E 3P4, Canada
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University of Saskatchewan
ACTIVE_NOT_RECRUITINGSaskatoon, Saskatchewan, S7N 0W8, Canada
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a diet calm inflamed joints in children with arthritis?
- Can better sleep ease pain in teens with rheumatic disease?
- Can a biologic drug tame juvenile arthritis in kids?
- Simple core workouts may tame pain and fatigue in kids with arthritis
- Hidden muscle loss in young arthritis patients under the microscope