Which cannabis warnings stick? study puts messages to the test
NCT ID NCT07699198
First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time
Summary
This study aims to find out which cannabis warning messages are most effective at raising awareness and changing perceptions. Researchers will show US adults (both users and non-users) seven different warning messages covering topics like dependence, cognitive function, and cardiovascular health. Participants will rate each message on clarity, believability, and how much it makes them think about cannabis risks. The results could guide future public health campaigns.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this research could help identify the most effective warning messages to inform the public about cannabis risks.
- What could go wrong
- This is a brief online survey, not a real-world intervention. Results may not predict how warnings actually change behavior.
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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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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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University of North Carolina at Chapel Hill
Chapel Hill, North Carolina, 27514, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••
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