Cannabis study reveals hidden brain risks in asian users

NCT ID NCT04373525

Completed Knowledge-focused Sponsor: The University of Hong Kong Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study from the University of Hong Kong looked at 110 cannabis users aged 16-60 to see how their thinking skills change over time and if genes play a role. Participants took memory and thinking tests and gave blood for genetic analysis. The goal is to understand long-term brain effects in Asian users, who have been understudied.

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 reveal how cannabis harms memory and thinking in Asian users, and identify genetic risks for worse outcomes.
What could go wrong: This is an observational study with only 110 participants, so results may not apply to everyone. It does not test a treatment, so no direct health benefit.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

cannabis dependence Cognition Disorders cognitive disorder inherited disease susceptibility

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CANNABIS USE GENETIC PREDISPOSITION NEUROCOGNITIVE DYSFUNCTION

Contacts and locations

Locations

Queen Mary Hospital

Hong Kong, 000000, Hong Kong

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