Cannabis involvement in individuals with bipolar disorder

In a study of 471 bipolar disorder (BD) cases and 1761 controls, individuals with BD were 6.8 times more likely to report a lifetime history of cannabis use. Rates of DSM-IV cannabis use disorders in those with BD were 29.4% and were independently and significantly associated with increased suicide attempts, greater likelihood of mixed episodes and greater disability attributable to BD. (C) 2010 Elsevier Ireland Ltd. All rights reserved.