Smoking cannabis regularly triples severe depression risk, study of …

Regular cannabis smoking can almost triple a teenager’s risk of suffering depression early in adulthood, according to new research.

A study of more than 3,000 teenagers growing up in the Bristol area found those who used cannabis were much more likely to suffer bipolar disorder by the time they reached adulthood.

It found marijuana caused a condition known as ‘hypomania’ – periods of elated mood, overactive and excited behaviour and reduced need for sleep. These are telltale symptoms often experienced as part of severe depression – and have a serious impact on day-to-day life.

The study published by Schizophrenia Bulletin is the first to test the link between cannabis use in adolescence and hypomania in early adulthood.

It followed 3,370 male and female participants – comparing rates of cannabis use when

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