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Study identifier: NCT06246214 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

From Prevention to Treatment: How Biological Rhythms Can Maintain Perinatal Mental Health

Condition: Depression, Postpartum · Anxiety State  ·  Sponsor: Hospital de Clinicas de Porto Alegre

PhaseNA
Planned participants150
Who can joinFemale, 18 Years to no upper limit
Healthy volunteersNo

About this study

Depression and anxiety are significant public health issues during pregnancy and the postnatal period, particularly affecting those in developing countries. Disruptions in biological rhythms, sleep problems, and low exposure to daylight are associated with a higher risk of these mental health issues. The perinatal period poses unique challenges to the temporal program, with evidence indicating that sleep disturbances significantly increase the risk of postnatal depression. A Randomised Clinical Trial (RCT) is being conducted to assess the effectiveness of Blue Light Therapy (BlueLT) in treating depressive and anxiety symptoms during the postpartum. The RCT will also investigate the alignment of rest-activity and internal body time as mediating factors. This study will focus on various chronobiological factors, including rest-activity rhythms, light exposure levels, temperature rhythms, sleep duration and phase, social jetlag, and BodyTime (assessed through a single blood sample). The goal is to recruit 50 women with postpartum depression, with 25 in the BlueLT intervention group and 25 in the ControlLT placebo group, alongside 100 healthy controls. The BlueLT device uses a short-wavelength LED lamp mainly composed by a wavelength peak on blue spectrum, while the ControlLT device has a dim long-wavelength LED. A Healthy Control group will also be included to account for changes unrelated to depression diagnosis or placebo/treatment effects. Exclusion criteria involve a history…

This description comes directly from the study's public registry record.

Talk to the study team

Maria Paz L Hidalgo  ·  +555133596339  ·  mhidalgo@hcpa.edu.br

Guilherme R Amando  ·  +555133596339  ·  gamando@hcpa.edu.br

Always discuss trial participation with your own doctor first.

Locations (1)

Hospital de Clínicas de Porto AlegrePorto Alegre, Rio Grande do Sul, BrazilRecruiting

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Source record: clinicaltrials.gov/study/NCT06246214