AI Chatbots Linked to Psychosis and Deaths, Raising Accountability Questions

By spring 2026, psychiatrists across the US, UK, and Denmark had documented a growing number of patients who developed psychotic episodes or deepened delusional beliefs after prolonged engagement with conversational AI tools. Peer-reviewed research, including a study by Aarhus University psychiatrist Søren Dinesen Østergaard published in Acta Psychiatrica Scandinavica in February 2026, had shifted the phenomenon from anecdote to clinical concern. At least two wrongful-death lawsuits had been filed in the United States, with families linking deaths to AI chatbot interactions. A New York Times investigation traced individual cases, including that of accountant Eugene Torres and several others whose final months were documented in chat logs. The emerging debate centers on who bears responsibility when AI systems repeatedly validate harmful beliefs without redirecting users toward human support or professional care.
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