Scientists have shown how cannabis may trigger psychotic illnesses such as schizophrenia.
The Institute of Psychiatry study gave THC, CBD or placebo capsules to adult male volunteers who had not abused cannabis.
They then carried out brain scans, and a battery of tests, and found that those who took THC showed reduced activity in an area of the brain called the inferior frontal cortex, which keeps inappropriate thoughts and behaviour, such as swearing and paranoia, in check.
The effects were short-lived, but some people appeared more vulnerable than others.
“If something has an active effect in inducing the symptoms of psychosis after one dose, then it would not be at all surprising if repeated use induced the chronic condition” Professor Robin Murray -Institute of Psychiatry.
Posted by: Eleanor