30 Apr What The Experts Say About Cannabis

Prof. Les Iversen Prof. Les Iversen

“Cannabis is a safer drug than aspirin and can be used long-term without serious side effects. It is never possible for a scientist to say that anything is totally safe. But, at the end of the day, scaremongering does science – and the public – a great disservice. Cannabis is simply not as dangerous as it is being made out to be.”

Professor Les Iversen, chair, Advisory Council on the Misuse of Drugs, May 2003

Prof. Tim Kirkham Prof. Tim Kirkham

“Cannabis has been used safely for many thousands of years…there have been concerted efforts to demonise the drug’s use.”

Professor Tim Kirkham, psychologist, Liverpool University. 2007

Dr Trevor Turner Dr Trevor Turner

“I don’t think it causes mental illness. I have never seen a case of so-called cannabis psychosis.”

Dr Trevor Turner, former vice president of the Royal College of Psychiatrists. 2007

Prof Glyn Lewis Prof Glyn Lewis

“I think it is also important to note that we cannot be certain that there is a causal link between cannabis use and psychosis at present.”

Professor Glyn Lewis, University of Bristol, March 2011

Dr Clare Gerada Dr Clare Gerada

“I don’t see a lot of problem cannabis users…we’re not seeing a lot of cannabis users presenting for treatment.”

Dr Clare Gerada, chair, Royal College of General Practitioners. March 2012

Prof. David Nutt Prof. David Nutt

“The harms of cannabis are less than the harms of alcohol…decriminalising cannabis would bring a net benefit to the population.”

Professor David Nutt, chair, Independent Scientific Committee on Drugs, June 2012

Prof Terrie Moffitt Prof Terrie Moffitt

“Cannabis is safe for over-18 brains, but risky for under-18 brains.”

Professor Terrie Moffitt, Institute of Psychiatry. August 2012