In the United States, the federal Controlled Substances Act (CSA) of 1970 makes illegal the use and possession of cannabis for any objective. Under the CSA, hashish is classed as a Schedule I substance, which means it has a high potential for abuse and no accepted medical use, thereby prohibiting even medical use of the drug . At the state level, nevertheless, policies concerning the medical and recreational use of hashish vary tremendously, and lots of state policies conflict with federal regulation. Researchers from the University of Bath’s Centre for Pain Research have contributed to a major international evaluation into the security and efficacy of cannabinoids when used to treat pain, including persistent ache in children and adults. New evidence from Bath’s Centre for Pain Research challenges the effectiveness of cannabis-based drugs for treating persistent ache in adults and youngsters.