Scientists have shown how cannabis may trigger psychotic illnesses such as schizophrenia.

A King's College London team gave healthy volunteers the active ingredient tetrahydrocannabinol (THC).

They then recorded reduced activity in an area of the brain which keeps inappropriate thoughts at bay.

this is particularly fascinating to me personally since it was cannabis which induced my first breakdown and i'm still feeling the consequences on my life 14 years later

BBC NEWS | Health | Cannabis 'disrupts brain centre'