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Smartwatch could spot depression by tracking heart rate and sleep

NCT ID NCT05767593

Diagnosis Sponsor: Massachusetts General Hospital 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 a Samsung smartwatch can detect signs of depression by analyzing heart rate, sleep, and step count. About 220 adults with and without depression will wear the watch for 3 months and complete daily mood surveys. The goal is to see if the watch's 'Mindfulness Index' can accurately identify people with major depressive disorder.

What this could mean

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

Active substance
Samsung smartwatch with Mindfulness Index algorithm
What this could lead to
If successful, this could lead to a simple way to detect depression using a smartwatch, helping people get diagnosed earlier.
What could go wrong
This is an early-stage study with only 220 people. The algorithm may not work well in real-world settings or for all types of depression.

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.

Participants

About 220 people

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

Started

Apr 2023

Expected to finish

Jan 2027

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.

Who is studied

U.S. residents recruited through online advertisements.

Ages

18 to 65 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 (Depressed Adults) 1. Age 18-65 2. Meet full DSM-5 diagnostic criteria for a current major depressive episode, as assessed by the MINI for DSM-5 or Diagnostic Interview for Anxiety, Mood, and OCD and Related Neuropsychiatric Disorders (DIAMOND) AND exhibit both: 1. Beck Depression Inventory score of 9 or higher. 2. Clinical Global Impressions Scale of 3 or higher. 3. If the patient is receiving psychopharmacological or psychosocial treatment, must be stable for 8 weeks prior to enrollment. Inclusion Criteria (Healthy Controls) 1. Age 18-65 2. Do not meet the criteria for current or past major depressive episodes according to the DSM-5 criteria AND exhibit both: 1. Beck Depression Inventory score of 8 or lower. 2. Clinical Global Impressions Scale of 2 or lower. 3. If the patient is receiving psychopharmacological or psychosocial treatment, must be stable for 8 weeks prior to enrollment. Exclusion Criteria 1. A lifetime history of bipolar disorder, schizophrenia, psychosis, or delusional disorders; an eating disorder in the past 6 months; organic brain syndrome; a history of substance use disorder in the last 12 months. 2. Presence or history of clinically significant neurological disorders and brain injuries (cerebral infarction, cerebral hemorrhage, multiple sclerosis, epilepsy, etc.) 3. Serious medical illness or instability for which hospitalization may be likely within the next year. 4. Patient does not own a smartphone with a data plan that allows them to receive text messages and access the internet throughout the day. 5. Patient is unable to understand study procedures and participate in the informed consent process.

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Conditions

The condition(s) this trial relates to.

major depressive disorder mood disorder

As listed by the trial registrant

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

Major depressive disorder Mental health issue Mood disorders

Contacts and locations

Locations

  • Center for Anxiety and Traumatic Stress Disorders, Massachusetts General Hospital

    Boston, Massachusetts, 02114, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.