Medical MarijuanaMedical marijuana refers to the use of the cannabis plant or its derivatives to treat a medical issue. Among the arguments for legalizing medical marijuana is its ability to treat symptoms of serious diseases and conditions, including AIDS, glaucoma, cancer, multiple sclerosis, epilepsy, and chronic pain. Following the results of the November 2018 elections, in which Missouri and Utah voters approved the use and sale of medical marijuana, legislation to permit the use of medical marijuana has been approved in thirty-three US states, the District of Columbia, Guam, and Puerto Rico. Ten of those states and the District of Columbia have also passed legislation allowing the recreational use of marijuana by adults. Implementation of medical marijuana legislation has experienced delays in several jurisdictions, including Florida, Louisiana, Maryland, Michigan, New Jersey, Ohio, and Oklahoma, as lawmakers work to comply with changing laws and find the most equitable approach to licensing businesses in the emerging and highly profitable industry. A poll conducted by the Pew Research Center in September 2018 found that 62 percent of Americans supported marijuana legalization for recreational use, while an April 2018 poll of registered US voters conducted by Quinnipiac University found that 93 percent supported legalizing marijuana for medical purposes. Despite such levels of public support, some medical practitioners and lawmakers continue to argue against legalization for medical use because of the possible health risks, as well as the risk that such legislation could increase the likelihood of recreational use of the drug.