Pubdate: Tue, 17 Feb 2015 Source: New Zealand Herald (New Zealand) Copyright: 2015 New Zealand Herald Contact: http://www.nzherald.co.nz/ Details: http://www.mapinc.org/media/300 PSYCHOSIS LINK Nearly a quarter of new cases of psychosis are linked to high-potency "skunk like" cannabis, new British research shows. People who smoke super-strength cannabis are three times more likely to develop psychosis than people who have never tried the drug - and five times more likely if they smoke it every day. The study, by researchers at King's College London, will fuel calls for politicians and public health officials to take a stronger stance against high potency cannabis, at a time when many campaigners are arguing for marijuana to be legalised. The researchers say there is an "urgent need" to inform young people about the risks of strong cannabis. Uruguay and Colorado have legalised cannabis use but there is mounting evidence that strong types of the drug can trigger mental illness. The research is published in Lancet Psychiatry. The study found that smoking hash, a less potent cannabis, had no association with psychosis. - --- MAP posted-by: Jay Bergstrom