State governments are relaxing laws about marijuana use for both recreational and medicinal purposes. But just how harmless is this popular drug? This informative volume explores the effects, dangers, and possible benefits of marijuana. Despite what many believe, users can become addicted to marijuana. When young people ingest marijuana, it may negatively affect the way their brain develops. However, marijuana also helps patients with cancer, AIDS, epilepsy, and other conditions. This essential book provides students with up-to-date information about all aspects of marijuana use and suggests age-appropriate resources for those struggling with marijuana addiction.