Evidence-based research about cannabis

STEM is an independent, methodologically rigorous, and updated cannabis evidence resource for the health care sector that synthesizes what is known from research and what is left to learn about the health effects of cannabis.

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New National Data on Americans’ Substance Use, Abuse

Marijuana is the most commonly used illicit substance in the United States, data from the National Survey on Drug Use and Health (NSDUH) show. The survey revealed that in 2022, cannabis increased in every age group — including those older than age 65. The annual NSDUH...

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