‘I remember the person he used to be’: Man in cannabis psychosis stabbed childhood friend

Neal Brennan, 29, received a partly suspended sentence for a shocking and random stabbing attack on his childhood friend in Portmarnock in January 2025. The incident, described as bizarre, occurred after Brennan experienced severe psychosis linked to heavy cannabis use. The victim, recalling their past friendship, expressed shock at Brennan’s condition. This case highlights the severe mental health consequences of cannabis use, emphasizing the need for better understanding and support for those affected by psychosis.