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Can a light device lift winter mood?

NCT ID NCT04251000

Symptom relief Sponsor: ProofPilot Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Researchers are testing whether a Joovv Mini infrared light device changes mood, sleep, and activity levels during winter months. Participants include US-based adults with a history of mental health issues such as depression who live in colder regions. They will use the device and submit sleep and activity data from Withings or Oura devices.

What this could mean

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

Active substance
Joovv Mini infrared light device
What this could lead to
If the device helps, it could offer a home-based way to ease winter mood dips and sleep changes for people in northern latitudes.
What could go wrong
This is a small, non-clinical study using self-reported mood and consumer sleep trackers, so results may not be reliable or apply to people with diagnosed seasonal affective disorder.

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.

Expected to start

Feb 2020

An estimate. Start dates often move.

Expected to finish

Jul 2020

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 100 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: * history of mental health issues including clinical depression * US based * reasonably active individuals (self report run/gym 3x per week or more) Exclusion Criteria: * average daily high temperature in zipcode above 60 degrees through end of March

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Conditions

The condition(s) this trial relates to.

seasonal affective disorder

As listed by the trial registrant

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

Seasonal affective disorder

Contacts and locations

Locations

  • ProofPilot (Virtual Study: https://proofpilot.com)

    New York, New York, 10003, United States