U.S. decrees that marijuana has no accepted medical use

“Nonetheless, the DEA concluded that marijuana has no accepted medical use, Leonhart wrote in her letter, because its chemistry is not known and adequate studies have not been done on its usefulness or safety. “At this time,” she said, “the known risks of marijuana use have not been shown to be outweighed by specific benefits in well-controlled clinical trials that scientifically evaluate safety and efficacy.” “