Twin study: does quitting weed boost your brain?
NCT ID NCT05160688
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study uses identical twins who both use cannabis to see if quitting for 42 days improves memory, attention, and mental health symptoms. One twin is paid to stop using cannabis, while the other continues as usual. Researchers will compare changes in thinking skills and mood between the twins.
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 study could clarify whether stopping cannabis use for a period improves memory, attention, and mood, helping guide future recommendations.
What could go wrong
This is an early-stage observational study with a small sample of 100 participants. Results may not apply to all cannabis users, and the abstinence period is short.
Disclaimer
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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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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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Jessica M Ross
Aurora, Colorado, 80045, United States