The Cannabis plant has a history of medicinal use dating back thousands of years in many cultures. Medical cannabis can be administered through various methods, including capsules, lozenges, tinctures, dermal patches, oral or dermal sprays, cannabis edibles, and vaporizing or smoking dried buds. Harvesting the plant led to the spread of cannabis. Medical cannabis research includes any medical research on using cannabis as a treatment for any medical condition. For reasons including increased popular support of cannabis use, a trend of cannabis legalization, and the perception of medical usefulness, more scientists are doing plant medical cannabis research. Plant Medical cannabis is unusually broad as a treatment for many conditions, each of which has its own state of research. Similarly, various countries conduct and respond to plant medical cannabis research in different ways.
