Smoking strong pot daily increases psychosis risks

London, March 21
Amid growing decriminalisation of cannabis use, a new study warns that daily cannabis use, especially of high potency, is strongly linked to the risk of developing psychosis, a mental disorder characterised by a disconnection from reality.

The findings, published in the journal the Lancet Psychiatry, are consistent with previous studies showing smoking pot with a high concentration of THC -- over 10 per cent of the psychoactive substance within cannabis -- has more harmful effects on mental health than the use of weaker forms.

"As the legal status of cannabis changes in many countries and states, and as we consider the medicinal properties of some types of cannabis, it is of vital importance that we also consider the potential adverse effects that are associated with daily cannabis use, especially of high potency varieties," said lead author of the study Marta Di Forti from King's College London.

The new study looked at 11 sites across Euro