Morning light exposure to improve mood in military personnel

Regulating Mood and Suicidal Ideation With Morning Light Exposure Treatment

Not applicable Interventional University of Arizona · NCT05616819

This study is testing if daily morning light therapy can help improve mood and reduce suicidal thoughts in military personnel.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment480 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorUniversity of Arizona Academic / other
Locations1 site (Tucson, Arizona)
Trial IDNCT05616819 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effects of daily morning light therapy on mood regulation and suicidal ideation among military personnel. Over a three-year period, 400 participants will undergo a double-blind, placebo-controlled study, where they will receive either active light exposure or a placebo for 30 minutes each morning. The study aims to assess improvements in sleep-wake patterns and mental health outcomes, including suicidal thoughts, while also evaluating the acceptability of using a light headset device. The trial focuses on the relationship between circadian rhythms and emotional well-being in a military context.

Who should consider this trial

Good fit: Ideal candidates are military service members aged 18-60 who exhibit mild to moderate depression.

Not a fit: Patients who are not actively serving in the military or those with severe mental health disorders may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly improve mental health and reduce suicidal ideation among military personnel.

How similar studies have performed: Previous studies have shown promising results with light therapy for mood regulation, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
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

Where this trial is running

Tucson, Arizona

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Suicidal IdeationRegulation, EmotionCircadian RhythmBlue Light
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.