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Could morning light soothe your gut? new trial tests bright light therapy for Crohn's

NCT ID NCT05579392

Symptom relief Sponsor: Rush University Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether morning bright light therapy can help people with Crohn's disease or ulcerative colitis by reducing gut leaks and inflammation. About 30 adults with stable medication will use a light box each morning for 8 weeks. Researchers will check changes in gut barrier function, gut bacteria, and quality of life.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Sep 2022

Expected to finish

Oct 2026

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Biopsy proven diagnosis of Crohn's or Ulcerative Colitis 2. 18 years or older 3. Fecal Calprotectin \> 50 or CRP above upper limit of normal or a PROMISE Fatigue ≥ 50 4. Has been on a stable dose of either a biologic, immunomodulator, or 5-ASA for at least 12 weeks Exclusion Criteria: 1. Active IBD (Harvey Bradshaw Index \> 5 or Modified Harvey Bradshaw Index \>5) 2. Major depression (score ≥ 21 or any endorsement of suicidal intent on the Beck Depression) 3. Sleep apnea (score high risk in 2 or more categories of the Berlin Questionnaire) (43) 4. Restless leg syndrome (score ≥ 15 on the IRLS Study Group Rating Scale(44)) 5. Regular use of medications that affect intestinal permeability, and/or endogenous melatonin including metoclopramide, NSAIDs, beta blockers, psychotropic medications, hypnotics and exogenous melatonin products during 4 weeks prior to the study 6. People who have worked night shifts or crossed more than 2 time zones in the previous month 7. Any major organ disease - renal impairment (creatinine\>1.2 mg/dL), diabetes (Hgb-A1c \> 6.5%); liver disease (LFTs \> 1.5x normal), or significant cardiac failure (NY classification stage III/IV) 8. Diagnosis of narrow angle glaucoma or retinal disorders or demonstrated symptoms indicative of these diagnosis during the eligibility screening 9. Inability to sign an informed consent

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Conditions

The condition(s) this trial relates to.

Crohn disease inflammatory bowel disease ulcerative colitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Inflammatory bowel disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Medical University of South Carolina

    RECRUITING

    Charleston, South Carolina, 29425, United States

  • Rush University Medical Center

    RECRUITING

    Chicago, Illinois, 60068, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.