Cannabis use is associated with improved outcomes in opioid-dependent subjects undergoing outpatient treatment, according to data published online ahead of print in the journal Drug and Alcohol Dependence. “One of the interesting study findings was the observed beneficial effect of marijuana smoking on treatment retention,” authors concluded. “Participants who smoked marijuana had less difficulty with sleep and anxiety and were more likely to remain in treatment as compared to those who were not using marijuana, regardless of whether they were taking dronabinol or placebo.”