Smartwatch could spot depression by tracking heart rate and sleep
NCT ID NCT05767593
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.
Disclaimer
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Center for Anxiety and Traumatic Stress Disorders, Massachusetts General Hospital
Boston, Massachusetts, 02114, United States