Researchers from the National Institute on Drug Abuse and the University of Massachusetts Medical School have found a way to block the dopamine rush associated with THC, the main psychoactive chemical in marijuana, in order to reduce pot use among people with a psychological dependence on the drug. Though the risk of dependence is relatively low compared to other drugs, for those people who do seek help for an out-of-control pot habit, there's no current medical cure available.
THC is one of the ingredients that makes marijuana fun for the brain. According to somemodels of how cannabis…