In Pictures: Facts about marijuana and the new law
Marijuana facts
Credit: AFP/Getty Images
Chronic marijuana use, especially in a very young person, may also be a marker of risk for mental illnesses - including addiction - stemming from genetic or environmental vulnerabilities, such as early exposure to stress or violence. Currently, the strongest evidence links marijuana use and schizophrenia and/or related disorders. High doses of marijuana can produce an acute psychotic reaction; in addition, use of the drug may trigger the onset or relapse of schizophrenia in vulnerable individuals. (Source: National Institute on Drug Abuse)
Other Slideshows
New photos from ground zero of Moore tornado
Photos: EF5 tornado flattens parts of Moore, Oklahoma
Photos: Kellie Pickler named 'DWTS' champ
Photos: Forbes' list of world's most powerful women 
London terror attack leaves 1 dead near barracks
Cities (Seattle, too) that lost pro teams and got them back
