Americans’ use of cocaine fell by half from 2006 to 2010, but marijuana use rose more than 30 percent, says a report from the RAND Drug Policy Research Center reported by Health Day News. The spike in pot use may be due to an increase in the number of people who said they use the drug on a daily or near-daily basis.
Heroin use remained fairly stable between 2000 and 2010, while methamphetamine use rose sharply during the first half of the decade and then fell. Americans spend $100 billion a year on cocaine, heroin, marijuana and meth. “Having credible estimates of the number of heavy drug users and how much they spend is critical for evaluating policies, making decisions about treatment funding and understanding the drug revenues going to criminal organizations,” said lead author Beau Kilmer. The report was done for the White House Office of National Drug Control Policy.