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  1. Cannabis smoking is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ9-tetrahydrocannabinol, which is absorbed into the bloodstream via the lungs. Archaeological evidence indicates cannabis with high levels of THC was being smoked at least 2,500 years ago. In addition to being smoked and vaporized, cannabis and its active cannabinoids may be ingested, placed under the tongue, or applied to the ...

    • Methods

      Cannabis can be smoked in a variety of pipe-like implements...

    • Materials

      Disposable materials are often used in places where cannabis...

  2. Cannabis is mostly used recreationally or as a medicinal drug, although like other psychoactive drugs it may also be used for spiritual purposes. In 2013, between 128 and 232 million people used cannabis (2.7% to 4.9% of the global population between the ages of 15 and 65). [23] It is the most commonly used illegal drug in the world, [23] [24] though it is legal in some jurisdictions, with the highest use among adults (as of 2018) in Zambia, the United States, Canada, and Nigeria. [source?]

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    • Ancient History
    • Drug Effects
    • Legal Status
    • Health Risks

    Scientists believe that cannabis first grew somewhere in the Himalayas. Evidence of people smoking cannabis goes as far back as prehistory: archaeologists have found burnt hemp seeds at a burial site in what is now Romania. The most famous users of cannabis were the ancient Hindus, who called it ganjika in Sanskrit (ganja in modern Indian languages...

    When a person inhales cannabis smoke or consumes cannabis, he or she may get a feeling called "getting high" or "getting stoned". Cannabis's most common effects include feeling happy, relaxed, tired, silly or scared; having many ideas about what to do; not being able to think clearly (or remember some things at all); and getting hungry (also called...

    Medical cannabis

    In the 2010s many countries and some states in the United States made it legal for people with certain medical problems to use cannabis as a medicine. Medical use of cannabis is legal in Austria, Belgium, Canada, Chile, Colombia, the Czech Republic, Finland, Greece, Israel, the Netherlands, Spain and the United Kingdom. In March 2017 Germany legalised cannabis for medical use with treatment of pain and symptoms by chronic diseases.Only a few companies and doctors in Germany willingly prescrib...

    Personal use

    On December 11, 2013, Uruguay was the first country in the world to make it legal to grow, sell, and use cannabis for personal (or recreational) use. Other countries that allow people to have small amounts of cannabis (just enough for them to use personally) include Colombia, Ecuador, Jamaica, the Netherlands, Peru, Portugal, Spain, and Switzerland. In the United States, on January 1, 2014, the states of Washington and Colorado made it legal for people aged 21 or older to buy cannabis. In Nov...

    Cannabis is one of the least dangerous of the commonly used illegal drugs. It is almost impossible to overdoseon cannabis. A person would have to smoke their entire body weight in five minutes in order to overdose. As of 1995, scientists had not shown that smoking cannabis causes lung cancer, even in people who smoke a lot of cannabis for a long ti...

  4. The National Institute on Drug Abuse determined that marijuana use is "likely to precede use of other licit and illicit substances" and that "adults who reported marijuana use during the first wave of the survey were more likely than adults who did not use marijuana to develop an alcohol use disorder within 3 years; people who used marijuana and already had an alcohol use disorder at the outset were at greater risk of their alcohol use disorder worsening.

  5. Dec 24, 2019 · Cannabis (Marijuana) DrugFacts What is marijuana? Photo by NIDA Marijuana refers to the dried leaves, flowers, stems, and seeds from the Cannabis sativa or Cannabis indica plant. The plant contains the mind-altering chemical THC and other similar compounds. Extracts can also be made from the cannabis plant (see "Marijuana Extracts").

  6. Approximately 3 in 10 people who use marijuana have marijuana use disorder. 7 Some signs and symptoms of marijuana use disorder include trying but failing to quit using marijuana or giving up important activities with friends and family in favor of using marijuana. 8 The risk of developing marijuana use disorder is stronger in people who start using marijuana during youth or adolescence and who use marijuana more frequently. 9

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