Brain scans reveal secrets of booze and weed combo
NCT ID NCT06259916
First seen Jun 27, 2026 · Last updated Aug 12, 2026 · Updated 2 times
Summary
This study looks at how alcohol and cannabis, used alone or together, change brain activity and balance. About 99 adults aged 21-50 who regularly drink and use cannabis will complete tasks while wearing EEG sensors. The goal is to better understand intoxication patterns, not to test a treatment.
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
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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.
- Participants
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About 99 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2024
- Expected to finish
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May 2027
An estimate. End dates often move.
- Lead sponsor
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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.
- Ages
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21 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * 21-50 years old * Heavy drinkers (consuming more than 4 drinks/day or more than 14 drinks/week for men, or more than 3 drinks/day or more than 7 drinks/week for women) * Regular users of legal-market flower cannabis (at least 2x/week in past 3 months) * report simultaneously using alcohol and legal-market flower cannabis at least once per month in the past 3 months * English speakers. Exclusion Criteria: * Daily tobacco users * Diagnosed with or seeking treatment for alcohol use disorder (AUD) or other substance use disorder (SUD) * Females cannot be pregnant, breastfeeding or trying to become pregnant * Meet criteria for psychotic, bipolar or major depressive disorder with suicidal ideation, or history of these disorders, 5) Current use of psychotropic (except anti-depressants) * Report illicit drug use in past 60-days or fail drug screen on the day of the study appointment * Major medical condition contraindicating alcohol and/or cannabis consumption.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Colorado State University
RECRUITINGFort Collins, Colorado, 80523, United States
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Other studies related to the condition(s) this trial covers.
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