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Over time, the marijuana gateway hypothesis has been studied more and more. In one published study, the use of marijuana was shown not a reliable gateway cause of illicit drug use. [67] However, social factors and environment influence drug use and abuse, making the gateway effects of cannabis different for those in differing social circumstances.
Cannabis use disorder is diagnosed when a person has two or more of such symptoms as craving weed, becoming tolerant to its effects, using more than intended, using marijuana even though it causes ...
Daily marijuana use among young adults has risen to record highs, with more than 1 in 10 of young adults ages 19-30 now reporting daily use, and almost half reporting use within the last year ...
A lot of the data around marijuana use and mental health focuses on people who are heavy pot users, making it difficult to say for certain how sporadic marijuana use will affect people, Hillary ...
The observed effects on memory and learning, they said, showed long-term cannabis use caused "selective memory defects", but "of a very small magnitude". [85] A study by Johns Hopkins University School of Medicine found that heavy cannabis use is associated with decrements in neurocognitive performance even after 28 days of abstinence.
The survey is a highly regarded source of estimates of tobacco, alcohol and drug use in the United States. In 2022, an estimated 17.7 million people used marijuana daily or near-daily compared to 14.7 million daily or near-daily drinkers, according to the study.
Cannabis has long been used for hemp fibre, hemp seeds and their oils, hemp leaves for use as vegetables and as juice. Industrial hemp products are made from cannabis plants selected to produce an abundance of fibre. Cannabis also has a long history of being used for medicinal purposes, and as a recreational drug known as marijuana or weed.
— An estimated 17.7 million people reported using marijuana daily or near-daily in 2022, up from less than 1 million in 1992. — 42% of people who say they've used marijuana in the past month ...