By Megan Brooks

Published March 1, 2010

NEW YORK (Reuters Health) - Young people who use marijuana (cannabis) are at increased risk of suffering hallucinations, delusions or other reality-distorting "psychoses." And the more time that's passed since first use, the higher the risk.

By John Ingold

Published February 13, 2010

Federal drug-enforcement agents Friday raided the home of a Highlands Ranch man who a day earlier bragged in a 9News report about the large and profitable medical-marijuana-growing operation in his basement.

Along with the raid, Jeffrey Sweetin, the Drug Enforcement Administration's special agent in charge of the Denver office, sent a message to anyone involved in Colorado's increasingly profitable medical-marijuana industry.

"It's still a violation of federal law," Sweetin said. "It's not medicine. We're still going to continue to investigate and arrest people."

By Mike McPhee

Published February 24, 2010

U.S. prosecutors wrestling the legal issues of an Oct. 20, 2009, raid on a marijuana-growing operation in Fort Collins say federal law trumps an amendment to the Colorado Constitution making it OK to use or sell medical pot.

"Possession or distribution of any quantity of marijuana, for any purpose, remains illegal as a matter of federal law throughout the State of Colorado. (Federal prosecutors have) the discretion to prosecute individual cases of possession and distribution without regard to state law," wrote Assistant U.S. Attorney Stephanie Podolak last week in a brief supporting the Drug Enforcement Administration raid on the home of Martin Pieper.

DEA agents seized 150 marijuana plants, eight grow lights and a variety.

By John Hoeffel

Published February 18, 2010

City sues three collectives and moves to evict 18 others from their stores, saying they have violated state laws. The actions stem from undercover police operations at the dispensaries.

By National Public Radio

Published February 10, 2010

Colorado is one of more than a dozen states to legalize medical marijuana. Denver psychiatrist Christian Thurstone argues that the state's relaxed laws have made the drug widely available — and irresistible — to too many adolescents.

1374. (09-0022)

Changes California Law to Legalize, Regulate, and Tax Marijuana. Initiative Statute.

Summary Date: 09/08/09

Withdrawn: 02/04/10

LOS ANGELES — The City Council approved an ordinance on Tuesday that would shutter the majority of the nearly 1,000 medical marijuana dispensaries in Los Angeles and make the use of marijuana in the remaining outlets illegal.

By Scott LaFee, STAFF WRITER

Published December 22, 2009

A study of Canadian teenagers, among the largest consumers of cannabis worldwide, found that smoking the illicit drug is harder on young brains than originally thought. Writing in the journal Neurobiology of Disease, researchers at McGill University in Montreal said daily consumption of cannabis in teens can cause significant depression and anxiety and have an irreversible long-term effect on the brain.