Recruiting

Re-Timer®

Sponsor:

University of Michigan

Code:

NCT07766161

Conditions

Postpartum Depression (PPD)

Eligibility Criteria

Sex: Female

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Light therapy

Study Details

Brief summary:

The proposed study is an open-label trial of Re-Timer® wearable morning bright light therapy for postpartum depression. The study is focused on evaluating the feasibility, acceptability, and implementation context of morning Bright Light Treatment (mBLT) for postpartum depression.

Conditions

Postpartum Depression (PPD)

Study ID

NCT07766161

Start date

Jul 29, 2026

Status verified date

Aug, 2026

Completion date

May, 2027

Anticipated

Primary completion date

May, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: Female

Age: 18+

Healthy Volunteers: Not accepted

Inclusion Criteria:

1. ≤ 6 months postpartum
2. EPDS score >10

Exclusion Criteria:

1. Current or past-year substance use disorder
2. Lifetime history of bipolar disorder or psychotic disorder
3. Active suicidal intent
4. Retinal pathology or history of eye surgery
5. Current use of photosensitizing medications
6. Untreated sleep-disordered breathing, untreated restless legs syndrome, or narcolepsy
7. Psychotherapy or psychotropic medications started/dose changed in past month (psychotherapy started and/or current medication at stable dose ≥ 4 weeks are permitted)
8. Medical conditions contraindicated for mBLT (e.g., epilepsy/seizures)

Study Design

Enrollment

30 participants

Anticipated

Intervention Model

Single group

Primary purpose

Other

Interventions and Outcome Measures

Arms

experimental: Light therapy

Participants in the arm will be approximately 30 women who are within 6 months postpartum and have an Edinburgh Postnatal Depression Scale (EPDS) score > 10.

Interventions

Light therapy

Participants will use the Re-Timer daily for 5 weeks (approximately 35 days). All participants will be provided with a "light therapy window" during which they will wear the device for 60 mins.

Primary outcome measure

  • Retention rate [ Time Frame: At approximately 5 weeks after treatment is started (post-treatment) ]
  • Adherence rate (as assessed through self-report) [ Time Frame: At approximately 5 weeks after treatment is started (post-treatment) ]

Central Contacts and Locations

Central contacts

Kelley DuBuc

734-764-1904dubuck@med.umich.edu

Locations

University of Michigan

Recruiting

Ann Arbor, Michigan, United States, 48109

Contacts

Kelley DuBuc

734-764-1904dubuck@med.umich.edu

Principal Investigator:

Leslie Swanson, PhD

More Information

Sponsor

University of Michigan

Last update posted

Aug 14, 2026

Last verified

Aug, 2026

Keywords

  • Circadian rhythm
  • Light therapy

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by University of Michigan on 2026-08-14.