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Can a morning light fix lift mood and curb suicidal thoughts?

NCT ID NCT05616819

Symptom relief Sponsor: University of Arizona 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 wearing special glasses that emit blue light each morning for two weeks can improve mood, sleep, and reduce suicidal thoughts in military members with mild depression. Researchers will compare the active blue light to a placebo light to see if the timing and color matter. The goal is to find a simple, drug-free way to support mental health in service members.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
morning light exposure via glasses (470nm blue light)
What this could lead to
If it works, this could offer a simple, non-drug way to improve mood and reduce suicidal thoughts in military personnel.
What could go wrong
This is an early-stage trial with no phase, and the effect may be small or no better than placebo. Results may not apply to non-military populations.

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 480 people

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

Started

Jul 2023

Expected to finish

Jan 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 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Ages 18-60 years * At least an 8th grade reading level * Score ≥ 5 (i.e., mild depression or greater) on the Patient Health Questionnaire 9 (PHQ-9) * Service member of any Armed Forces branch, including active duty, Reserve, or National Guard Exclusion Criteria: * Not actively serving in an Armed Force branch * Scored (i.e., \< 5) range on the PHQ-9 (non-depressed) * Pregnant or trying to become pregnant * Breastfeeding * History of psychotic disorder or manic episodes * Bipolar disorder * Diseases of the eye * Have had cataract surgery * Frequent and light-sensitive migraine headaches * Self-reported plan to regularly engage in nightshift work during the 6-week course of the study

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Conditions

The condition(s) this trial relates to.

Emotional Regulation Suicidal Ideation

As listed by the trial registrant

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

Regulation, emotion Suicidal ideation

How to take part

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

  1. The places running it

    1 site. 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

  • University of Arizona

    RECRUITING

    Tucson, Arizona, 85719, United States

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