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Cannabis. Cannabis smoking (known colloquially as smoking weed or smoking pot) is the inhalation of smoke or vapor released by heating the flowers, leaves, or extracts of cannabis and releasing the main psychoactive chemical, Δ 9 - tetrahydrocannabinol (THC), which is absorbed into the bloodstream via the lungs.
Male Cannabis sativa in flower. Cannabis sativa is an annual herbaceous flowering plant. The species was first classified by Carl Linnaeus in 1753. [ 1 ] The specific epithet sativa means 'cultivated'. Indigenous to Eastern Asia, the plant is now of cosmopolitan distribution due to widespread cultivation. [ 2 ]
Cannabis (/ ˈ k æ n ə b ɪ s /) [2] is a genus of flowering plants in the family Cannabaceae.The number of species within the genus is disputed. Three species may be recognized: Cannabis sativa, C. indica, and C. ruderalis.
Cannabis cultivation dates back at least 3000 years in Taiwan. [ 3 ] The history of cannabis and its usage by humans dates back to at least the third millennium BC in written history, and possibly as far back as the Pre-Pottery Neolithic B (8800–6500 BCE) based on archaeological evidence. For millennia, the plant has been valued for its use ...
e. In the United States, cannabis is legal in 38 of 50 states for medical use and 24 states for recreational use. At the federal level, cannabis is classified as a Schedule I drug under the Controlled Substances Act, determined to have a high potential for abuse and no accepted medical use, prohibiting its use for any purpose. [1]
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 (THC), and 120 terpenes, [1] which allow its drug to have various psychological and physiological effects on the human body.
Hemp, or industrial hemp, is a plant in the botanical class of Cannabis sativa cultivars grown specifically for industrial and consumable use. It can be used to make a wide range of products. [ 1 ] Along with bamboo , hemp is among the fastest growing plants [ 2 ] on Earth.
In the U.S., the National Institute on Drug Abuse defines medical cannabis as "using the whole, unprocessed marijuana plant or its basic extracts to treat symptoms of illness and other conditions". [ 14 ] A cannabis plant includes more than 400 different chemicals, of which about 70 are cannabinoids. [ 15 ]