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    Marijuana and Public Health

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    Marijuana—which can also be called cannabis—is the most commonly used federally illegal drug in the United States, with an estimated 48.2 million people using it in 2019.

    What's New
    • CDC’s Disease of the Week: Marijuana/Cannabis Use Disorder
    • Trends and characteristics of cannabis-associated emergency department visits in the United States, 2006–2018external icon
    • Feature: What We Know About Marijuana
    • CDC Health Network Alert (HAN) Advisory: Increases in Availability of Cannabis Products Containing Delta-8 THC and Reported Cases of Adverse Events
    • Cannabis Adult-use Sales Increase during COVID-19: Findings from Alaska, Colorado, Oregon, and Washington
    Health Effects
    Health Effects

    Learn more about the effects of marijuana.

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    Data and Statistics
    Data and Statistics

    Explore tools for collecting marijuana data.

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    FAQs
    Frequently Asked Questions

    Get answers to frequently asked questions about marijuana and health.

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    Learn more about the work CDC is doing to address marijuana use and public health.

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    Page last reviewed: September 14, 2021
    Content source: National Center for Injury Prevention and Control, Centers for Disease Control and Prevention
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