Professors William Emboden, Loran Anderson, and Harvard botanist Richard E. Schultes and coworkers also conducted taxonomic studies of Cannabis in the 1970s, and concluded that stable morphological differences exist that support recognition of at least three species, C. sativa, C. indica, and C. ruderalis. For Schultes, this was a reversal of his previous interpretation that Cannabis is monotypic, with only a single species. According to Schultes' and Anderson's descriptions, C. sativa is tall and laxly branched with relatively narrow leaflets, C. indica is shorter, conical in shape, and has relatively wide leaflets, and C. ruderalis is short, branchless, and grows wild in Central Asia. This taxonomic interpretation was embraced by Cannabis aficionados who commonly distinguish narrow-leafed "sativa" strains from wide-leafed "indica" strains.
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In June 2014, the New York Assembly passed S7923, which creates legal protections for patients and caregivers and authorizes the state to license and regulate “registered organizations” to cultivate and sell medical cannabis to patients. Patients must obtain a registration identification card after getting written certification from their physician.
In 2004, the 9th US Circuit Court of Appeals ruled that the naturally occurring Cannabinoids contained in non psychoactive varieties of Cannabis (industrial Hemp) are outside of the regulatory power of the DEA making hemp stalk and seed based cannabis oil legal after the DEA attempted to enforce a zero tolerance policy on the trace amounts of THC contained in Hemp products being sold at the time, such as nutritional Hemp seed oil. One can view these trace amount of THC being very similar to the trace amount of morphine and codeine found within poppy seeds used for baked goods.
Cannabidiol is currently a class B1 controlled drug in New Zealand under the Misuse of Drugs Act. It is also a prescription medicine under the Medicines Act. In 2017 the rules were changed so that anyone wanting to use it could go to the Health Ministry for approval. Prior to this, the only way to obtain a prescription was to seek the personal approval of the Minister of Health.
In 1972, the Dutch government divided drugs into more- and less-dangerous categories, with cannabis being in the lesser category. Accordingly, possession of 30 grams or less was made a misdemeanor. Cannabis has been available for recreational use in coffee shops since 1976. Cannabis products are only sold openly in certain local "coffeeshops" and possession of up to 5 grams for personal use is decriminalised, however: the police may still confiscate it, which often happens in car checks near the border. Other types of sales and transportation are not permitted, although the general approach toward cannabis was lenient even before official decriminalisation.
About 9% of those who experiment with marijuana eventually become dependent according to DSM-IV (1994) criteria. A 2013 review estimates daily use is associated with a 10-20% rate of dependence. The highest risk of cannabis dependence is found in those with a history of poor academic achievement, deviant behavior in childhood and adolescence, rebelliousness, poor parental relationships, or a parental history of drug and alcohol problems. Of daily users, about 50% experience withdrawal upon cessation of use (i.e. are dependent), characterized by sleep problems, irritability, dysphoria, and craving. Cannabis withdrawal is less severe than withdrawal from alcohol.
President Obama’s execution of the Agricultural Act of 2014 is an integral piece to CBD oil’s legality. If a plant is deemed legal (where the determining factor is a THC level under .3%) that then makes all products made from the source material legal as well. Did you ever wonder why your hemp lotion 15-20 years ago was legal but “smoking a little weed” wasn’t? In this case, it’s all about the THC levels your plant doesn’t have.
Medical cannabis, or medical marijuana, can refer to the use of cannabis and its cannabinoids to treat disease or improve symptoms; however, there is no single agreed-upon definition. The rigorous scientific study of cannabis as a medicine has been hampered by production restrictions and other federal regulations. There is limited evidence suggesting cannabis can be used to reduce nausea and vomiting during chemotherapy, to improve appetite in people with HIV/AIDS, and to treat chronic pain and muscle spasms. Its use for other medical applications is insufficient for conclusions about safety or efficacy.
The question of whether heteromorphic sex chromosomes are indeed present is most conveniently answered if such chromosomes were clearly visible in a karyotype. Cannabis was one of the first plant species to be karyotyped; however, this was in a period when karyotype preparation was primitive by modern standards (see History of Cytogenetics). Heteromorphic sex chromosomes were reported to occur in staminate individuals of dioecious "Kentucky" hemp, but were not found in pistillate individuals of the same variety. Dioecious "Kentucky" hemp was assumed to use an XY mechanism. Heterosomes were not observed in analyzed individuals of monoecious "Kentucky" hemp, nor in an unidentified German cultivar. These varieties were assumed to have sex chromosome composition XX. According to other researchers, no modern karyotype of Cannabis had been published as of 1996. Proponents of the XY system state that Y chromosome is slightly larger than the X, but difficult to differentiate cytologically.
That headache study cites research linking CBD to lower rates of anxiety. (Since anxiety often produces headaches, the authors say, CBD could be a plausible headache remedy if those anti-anxiety benefits are legit.) Grant says he’s looked at the literature on CBD and anxiety, and some of it is enticing. He mentions a Brazilian study, for instance, that found people with a fear of public speaking felt less anxiety and less discomfort about their phobia after taking CBD, compared to those who took a placebo.
Some research suggests that CBD also eases pain by engaging glycerin receptors – which are part of the central nervous system and are located in different parts of the brain and spinal cord. If a person has chronic pain, inflammatory factors sometimes disable these receptors, leading to higher sensation of pain, but it’s possible to reactivate them using CBD.
Truth be told, one of the biggest draws to using CBD oil for pain has been the fact that it has little distinguishable side-effects or contraindications with other medications. In fact, in a massive report that was published by the World Health Organization during last year’s 2017 Expert Committee on Drug Dependence, it was (finally) declared to the world that CBD is a “safe, well tolerated [compound, which] is not associated with any significant adverse public health effects.”