CDC: More people are using marijuana, but fewer are abusing it - Washington Post

Washington PostCDC: More people are using marijuana, but fewer are abusing itWashington PostDependence and abuse were measured by common criteria set by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) used by the American Psychiatric Association. [A growing number of U.S. adults are using pot. But are their perceptions of ...and more »