Smoking just one cannabis joint raises danger of mental illness by 40%
By FIONA MACRAE and EMILY ANDREWS
26th July 2007

There are great risks in smoking cannabis, a new report has revealedA single joint of cannabis raises the risk of schizophrenia by more than 40 per cent, a disturbing study warns.

The Government-commissioned report has also found that taking the drug regularly more than doubles the risk of serious mental illness.

Overall, cannabis could be to blame for one in seven cases of schizophrenia and other life-shattering mental illness, the Lancet reports. the rest image