Cannabis and mental health

First published: 09 May 2019 | Last updated: 20 May 2019

Natural cannabis contains over 60 different types of cannabinoid molecule. Delta-9-THC is recognised as a risk factor for the development of psychotic illness, cognitive impairment and is habit-forming. However other plant cannabinoids may have therapeutic properties. The molecule cannabidiol (CBD) appears to have anti-psychotic effects, and is regarded as an anxiolytic. Trials of CBD in psychiatric patients have been ongoing, leading to hope that CBD may translate for clinical use.


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Dr Paul Morrison