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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.
According to the most recent data from the Centers for Disease Control and Prevention, an estimated 48.2 million people in the U.S., or 18% of Americans, reported using marijuana at least once in ...
Any use of marijuana could raise the risk of heart attack and stroke, even in people who don’t use cigarettes or don’t have existing heart disease, a new study finds.
Nearly half of U.S. states now permit recreational marijuana, but studies say there are risks to frequent usage.
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. [68] However, social factors and environment influence drug use and abuse, making the gateway effects of cannabis different for those in differing social circumstances.
Marihuana prensada ('pressed marijuana') is a cannabis-derived product widespread among the lower classes of South America, [189] especially from the 90s. Locally it is known as "paraguayo" or "paragua", since its main producer is Paraguay. [190] Marijuana is dried and mixed with binding agents that make it toxic and highly harmful to health. [191]
[6] [7] The CB 1 receptor is expressed mainly in the brain (central nervous system or "CNS"), but also in the lungs, liver and kidneys. The CB 2 receptor is expressed mainly in the immune system, in hematopoietic cells, [8] and in parts of the brain. [9] The protein sequences of CB 1 and CB 2 receptors are about 44% similar.
Dr. Phil also expressed his belief that smoking marijuana can cause a "multi-point drop" in a person's IQ, in addition to implying that the drug's use can be associated with violent behavior.