CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY CRISTINA PEDRAZZINI / SCIENCE PHOTO LIBRARY
Cannabis research, conceptual image. Dried flowers and leaves of the marijuana plant (Cannabis satvia). Cannabis may be useful medically due to its ability to relieve pain, increase appetite and control muscle spasms. The main active compunds are cannabinoids such as THC (tetrahydrocannabinol). Cannabis shows potential to treat the side-effects of chemotherapy and the symptoms of conditions including AIDS, multiple sclerosis and chronic pain from nerve damage. In 2005, the Spanish government decided to support the largest trial of therapeutic cannabis ever conducted. The trial will involve four hospitals, sixty pharmacies and 1,500 patients from Catalunya.
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