Stanford launches massive trial of online cannabis prevention for teens
NCT ID NCT07357454
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
Stanford University is testing a free online toolkit called Smart Talk to see if it can prevent cannabis use among middle and high school students. The study will enroll 10,800 students across participating schools. The curriculum includes lessons, quizzes, and activities to change attitudes about cannabis, build refusal skills, and improve coping. Researchers will measure changes in actual cannabis use and intentions to use.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Smart Talk Cannabis Awareness and Prevention curriculum (online educational toolkit)
What this could lead to
If it works, this could give schools a proven tool to reduce cannabis use and intentions among teens.
What could go wrong
This is a large but early-stage behavioral study. Results depend on how well schools implement the curriculum, and actual behavior change is hard to measure.
Disclaimer
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This is a summary of
the original study
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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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Contacts and locations
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Locations
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Stanford University
Palo Alto, California, 94304, United States
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