Marijuana alleviates pain, reduces inflammation, and promotes sleep, which may help relieve pain and discomfort for people with rheumatoid arthritis, researchers announced in 2011. Researchers from rheumatology units at several hospitals gave their patients Sativex, a cannabinoid based pain relieving medicine. After a two week period, people on Sativex had a significant reduction in pain and improved sleep quality compared to placebo users. - Business Insider
