Drug is a threat to mental health - Cannabis research

CANNABIS is sometimes seen as a relatively innocuous drug, especially when compared to other, harder, more destructive substances. 

That reputation, for the stronger forms of cannabis at least, was holed below the waterline by findings published in the Lancet Psychiatry journal.

The research, carried out over six years, concluded that powerful “skunk-like” cannabis is associated with one-in-four new cases of psychosis and that the potent form of the drug led to a three-times higher risk of psychosis in casual users. This ratio rose substantially for daily users.