Marijuana and Public Health

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

Feature: CBD – What You Need to Know
CDC’s Disease of the Week: Marijuana/Cannabis Use Disorder
Trends and characteristics of cannabis-associated emergency department visits in the United States, 2006–2018
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

Health Effects

Learn more about the effects of marijuana.

Data and Statistics

Explore tools for collecting marijuana data.

FAQs

Get answers to frequently asked questions about marijuana and health.

What CDC is Doing

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

CDC Publications