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Δ 9-tetrahydrocannabinol (THC) Cannabis sativa, scientific drawing from c. 1900 Although the main psychoactive constituent of Cannabis is tetrahydrocannabinol (THC), the plant is known to contain more than 500 compounds, among them at least 113 cannabinoids ; however, most of these "minor" cannabinoids are only produced in trace amounts. [ 10 ]
Popular strains are often hybrids of C. sativa and C. indica. The medicinal effects of cannabis are widely studied, and are active topics of research both at universities and private research firms. Many jurisdictions have laws regulating or prohibiting the cultivation, sale and/or use of medical and recreational cannabis. [citation needed]
Medical cannabis (or medical marijuana) refers to the use of cannabis and its constituent cannabinoids, in an effort to treat disease or improve symptoms. Cannabis is used to reduce nausea and vomiting during chemotherapy , to improve appetite in people with HIV/AIDS , and to treat chronic pain and muscle spasms .
Female cannabis plants contain at least 113 cannabinoids, [55] including cannabidiol (CBD), thought to be the major anticonvulsant that helps people with multiple sclerosis, [56] and cannabichromene (CBC), an anti-inflammatory which may contribute to the pain-killing effect of cannabis.
Cannabis plants can exhibit wide variation in the quantity and type of cannabinoids they produce. The mixture of cannabinoids produced by a plant is known as the plant's cannabinoid profile. Selective breeding has been used to control the genetics of plants and modify
A 2005 meta analysis concluded that adolescent use of cannabis increases the risk of psychosis, and that the risk is dose-related. [48] A 2004 literature review on the subject concluded that cannabis use is associated with a two-fold increase in the risk of psychosis, but that cannabis use is "neither necessary nor sufficient" to cause ...
Most people 50 and older who use cannabis do so at least once a month, saying it helps them sleep and eases pain, a new survey found. More than 20% of older adults have used pot in the past year ...
Female cannabis plants not only contain dronabinol but at least 113 other cannabinoids, [35] including cannabidiol (CBD), thought to be the major anticonvulsant that helps people with multiple sclerosis; [36] and cannabichromene (CBC), an anti-inflammatory which may contribute to the pain-killing effect of cannabis. [37]