 
Reviewed by John M. Grohol, Psy.D. on July 15, 2010Â
Can using marijuana actually make you smarter?
A recent study suggests that some patients with bipolar disorder who use marijuana actually performed better on certain neurocognitive tests.  However, marijuana appeared to have the opposite effect on schizophrenic patients.
Dr. Ole Andreassen of Oslo University Hospital in Norway and his colleagues studied the effects of marijuana on bipolar and schizophrenic patients. They believe that the different effects of marijuana on cognition indicate “different underlying disease mechanisms in the two disorders.â€
Marijuana is known to have a number of negative effects, including decreased cognition. Recent research has suggested that marijuana use can worsen symptoms of schizophrenia, and early use is associated with psychosis. The effects of marijuana on bipolar patients are less well known.
Read in Full:Â http://psychcentral.com/news/2010/07/15/different-effects-of-marijuana-in-bipolar-and-schizophrenic-patients/15496.html
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