When national drug use trends among adolescents go up or down, the risk of marijuana use among deviance-prone male youth also goes up or down. Among deviance-prone female youth, it does not, according to a study in the March issue of Prevention Science.

People with multiple sclerosis (MS) who smoke marijuana are more likely to have emotional and memory problems, according to research published February 13, 2008, in the online edition of Neurology®, the medical journal of the American Academy of Neurology.

The U.N.-affiliated drug control board claimed that marijuana vending machines in Los Angeles violate international treaties and demand that vending machines should be shut down.

The California Supreme Court stated that from now on an employer may fire employees who use medical marijuana outside of work, upholding two lower court decisions.

A Swiss study suggests that teens who use only cannabis appear to function better than those who also use tobacco, and are more socially driven and have no more psychosocial problems than those who abstain from both substances, according to a report in the November issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals.