Tobacco and cannabis

Cannabis and tobacco are among the most used substances by young people in the United States, and research shows these behaviors are often interconnected. As cannabis policies evolve across the country, it is important for young people to understand the potential risks of cannabis use. Early cannabis use has been linked to negative impacts on brain development, and heavy cannabis use during youth can lead to dependence, or cannabis use disorder. 

• More than 1 in 3 teens have tried cannabis by 12th grade. 
• Among youth ages 12-17, co-use of cannabis and tobacco is more common than using either substance alone. 
• Youth cannabis use can negatively impact brain development. 
• Nearly 1 in 10 adults who use cannabis will develop a dependence during their lifetime. 
• 24 states and Washington, D.C. have legalized cannabis for adult recreational use.  
• 40 states and Washington, D.C. have legalized medical cannabis.