Decriminalization of non-medical cannabis in the United States drug, which contains a very active component delta-9-tetrahydrocannabinol (THC). For thousands of years, it was used for medical purposes in many different parts of the world. Recent studies also agreed that THC had great potential benefits for medical purposes. A number of patients who have HIV, multiple sclerosis (MS), neuropathic chronic pain, and cancer were under medical marijuana treatment. The treatments could either be smoke on cannabis or oral preparations, which were synthetic THC and synthetic equivalent. According to Medical Uses of Marijuana (Cannabis sativa), patients with HIV reported that the drug reduced mixed neuropathic pain more significantly in comparison
Medical cannabis take a position, but does support rescheduling in order to facilitate research. The American Cancer Society and American Psychological Association have noted the obstacles that exist for conducting research on cannabis, and have called on the federal government to better enable scientific study of the drug. The authors of a report on a 2011 survey of medical cannabis users say that critics have suggested that some users "game the system" to obtain medical cannabis ostensibly for treatment of a condition, but then use it for nonmedical purposes – though the truth of this claim is hard to measure. The report