Randomized, double-blind crossover trial · 44 participants · October 31, 2026

Research by Stephanie Lake, Ziva Cooper, and colleagues, published October 29 in Neuropsychopharmacology, examined acute responses to placebo and two THC strengths of smoked cannabis in 44 adults, including 22 women. UCLA highlighted the work October 30.

Some intoxication and unpleasant effects were stronger among occasional male users, while frequent users showed stronger liking or self-administration on some measures.

Exploratory findings—not dosing instructions

The sample is small, the participants were healthy volunteers, and the study measured short-term responses. Exploratory subgroup comparisons can produce chance findings and need replication. The results do not establish treatment effectiveness, long-term addiction outcomes, or a reliable dose based on sex.

These results also cannot be assumed to apply to oral products. The study’s smoking route does not change Georgia’s prohibition on smoking medical cannabis.

Sources and context

• Peer-reviewed study ↗
• UCLA’s October 30 research notice ↗

October 31 intelligence-report selection. Human experimental evidence with limited generalizability.

For education, not personalized medical, legal, or tax advice.