General Article Cannabis: increased schizophrenia risk in young people linked to both low and high use

Topic Selected: Cannabis Book Volume: 399

Cannabis: increased schizophrenia risk in young people linked to both low and high use

Previous research suggested it was only high frequency use that was linked with schizophrenia. fotoNino/ Shutterstock

Ian Hamilton, University of York and Mark Monaghan, University of Birmingham

An estimated 200 million people use cannabis across the world. Next to alcohol and tobacco, it’s the most widely used drug in many countries. But while many may no longer see cannabis as a risky or harmful substance, there are still many things experts don’t know about cannabis – including why some people develop schizophrenia after use.

Researchers have been investigating the connection between cannabis use and schizophrenia since the late 1960s. Since then, research has confirmed a link between cannabis use and greater risk of developing schizophrenia.

Until now, most evidence has suggested that any link between cannabis and developing schizophrenia is due to using it frequently and at high dosages or ...

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