Yes. Research suggests that 3 in 10 people who use marijuana may have some form of marijuana use disorder, meaning they are unable to stop using marijuana even though it is causing health and social problems in their lives. For people who begin using marijuana before the age of 18 and who use marijuana often (daily/near daily), the risk of developing marijuana use disorder is even greater. In addition, the concentration or strength of tetrahydrocannabinol (THC) in marijuana products is increasing, and daily or near daily use of marijuana is increasing, both of which could make addiction and other health consequences more likely. For more information visit CDC’s section on addiction or the National Institute on Drug Abuse’s pages on addiction science and marijuana.