New research by the University of Warwick has revealed that cannabis use in youth is associated with bipolar mood disorder symptoms in young adults.
Adolescent cannabis use was found to be an independent risk factor for future hypomania – periods of elated mood, over-active and excited behaviour, and reduced need for sleep that are often experienced as part of bipolar disorder and have a significant impact on day-to-day life.
The research, led by Dr Steven Marwaha, a clinical academic psychiatrist, used data from the Avon Longitudinal Study of Parents and Children and found that teenage cannabis use at least 2-3 times weekly is directly associated with suffering from symptoms of hypomania in later years. There was a dose response relationship such that any use still increased the risk but less powerfully.
The research is the first to test the prospective association between adolescent
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