According to the National Institute on Drug Abuse, marijuana use can lead to a marijuana dependency and, in extreme cases, addiction.
About 30 percent of marijuana users are believed to have some degree of a marijuana-use disorder. This is often associated with “dependence,” NIDA says on its website, in which a person feels withdrawals when not using.
Frequent users report symptoms such as irritability, difficulty sleeping, moodiness, low appetite, cravings and physical discomfort after quitting.
If a person cannot stop using marijuana and it is interfering with his or her life, he or she may be addicted.
“Estimates of the number of people addicted to marijuana are controversial, in part because epidemiological studies of substance use often use dependence as a proxy for addiction,” NIDA says, “even though it is possible to be dependent without being addicted.”