Study: Cocaine use down, pot smoking up

Cocaine use dropped sharply across the United States from 2006 to 2010, while marijuana consumption jumped significantly during the same period, a new RAND study finds.

The researchers found the amount of marijuana consumed by Americans increased by more than 30 percent from 2006 to 2010, while cocaine use fell by about half. Heroin use was fairly stable throughout the decade.

Methamphetamine consumption dramatically rose during the first half of the decade and then declined, but researchers lack estimates on the drug’s use from 2008 to 2010.

The findings come from a report compiled for the White House Office of National Drug Control Policy by researchers affiliated with the RAND Drug Policy Research Center