THC sleep study: frequent vs. rare users under the microscope
NCT ID NCT03560934
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how a pill form of THC (dronabinol) affects sleep and thinking in 18 adults. Some participants used cannabis frequently (more than 3 times a week), while others rarely used it (less than 10 times ever). Researchers measured sleep stages, alertness, memory, and heart health over a 4-day hospital stay. The goal was to understand THC's effects, not to treat a disease.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
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Contacts and locations
Locations
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Oregon Health & Science University
Portland, Oregon, 97239, United States
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