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In the most recent murder case where cannabis use was judged to be a factor, the court ruled that Diego Costa Silva killed his wife while in a state of cannabis-induced psychosis at their home in Finglas, Dublin on November 4th, 2021. A jury found him not guilty of Fabiola De Campos Silva’s murder, by reason of insanity. His was one of a number of murder cases to come before Irish courts in the past year where cannabis-use was judged to be a factor.

Dr Colin O’Gara, head of addiction services at St John of God Hospital in Dublin, tells In the News about the dangers of new, more potent strains of cannabis, what is cannabis-induced psychosis and the link between use of the drug and existing mental health issues.

Presented by Bernice Harrison. Produced by John Casey.

Bernice Harrison

Bernice Harrison

Bernice Harrison is an Irish Times journalist and cohost of In the News podcast