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Cannabis use disorder (CUD), also known as cannabis addiction or marijuana addiction, is a psychiatric disorder defined in the fifth revision of the Diagnostic and Statistical Manual of Mental Disorders and ICD-10 as the continued use of cannabis despite clinically significant impairment.
Tobacco use, which includes smoking cigarettes, cigars, pipes and smokeless tobacco, and the use of alcohol are the two most common causes of head and neck cancers, experts say.
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.
A dried cannabis flower. The short-term effects of cannabis are caused by many chemical compounds in the cannabis plant, including 113 [clarification needed] different cannabinoids, such as tetrahydrocannabinol, and 120 terpenes, [1] which allow its drug to have various psychological and physiological effects on the human body.
Scientists analyzed data on nearly 435,000 patients, ages 18 to 74, to see whether there was a link between marijuana use and a higher risk of heart disease, stroke or heart attack.
New research based on data from the National Survey on Drug Use and Health, published Wednesday in the journal Addiction, compares Americans' use of cannabis and alcohol over the past 40 years.
Researchers estimate that up to one-third of near-daily cannabis users in the U.S. may experience symptoms, ranging from mild to severe, affecting approximately six million people. The rise of the syndrome in the past two decades coincides with the expansion of marijuana legalization in the United States. [32]
A survey of American adults found that many erroneously believe it is safer for the lungs to smoke weed than tobacco, and that any secondhand smoke from marijuana is also safer.