In a paper published inHuman Brain Mapping, researchers demonstrated for the first time with functional magnetic resonance imaging that long-termmarijuanausers had morebrainactivity in the mesocorticolimbic-reward system when presented with cannabis cues than with natural reward cues. "This study shows t...
Study finds withdrawal syndrome from long-term marijuana use.Reports on the finding that people who have smoked marijuana daily for many years display more aggressive behavior when they stop using the drug. Advice for people addicted to marijuana to continue using the drug at least partly to ...
Examines the association of long-term marijuana use with memory impairment in the U.S. Comparison of the cognitive functions of marijuana users with non-user controls; Provision of a treatment program for marijuana dependence; Impact of memory impairment on academic achievements....
New research suggests that marijuana use can deteriorate the part of the brain responsible for decision-making. Dr. David Agus joins "CBS This Morning" from Los Angeles to discuss the study.
In the study, researchers looked at 59 marijuana users who hadused marijuana dailyfor the past 60 days, and had used the drug on at least 5,000 occasions during their lives. The researchers wanted to see whether the brains of theselong-term marijuana userswould respond differently to picures...
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A new study suggests that chronic (pun intended) weed use may mess with your brain's reward system.
THC metabolites can remain in the bloodstream for two to seven days, contingent on the frequency of use. A 2009 study published in the journal Addiction tested THC blood concentration levels in 25 frequent, long-term cannabis users over seven days of abstinence. Sixteen users had at least one...
This study examined long-term effects of a school/family/community substance abuse prevention partnership intervention lead by a Midwestern school district. Previous findings suggested that the program contributed to decreased tobacco and marijuana, but not alcohol, use prior to and after implementation ...
To explore the potential long-term impact ofmarijuana use, the investigators focused on nearly 3,400 white and black men and women who were between the ages of 18 and 30 when they first enrolled in a national study in 1985 and 1986. ...