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The first major study on ‘AI psychosis’ suggests chatbots can increase delusions among the most vulnerable.
17 March 2026
By BPS Communications
New research in the Lancet has revealed that chatbots powered by AI may encourage delusional thinking, especially in vulnerable people. Responding to the news, President of the British Psychological Society Dr Roman Raczka said:
"These latest findings only add to our concerns regarding AI technology in mental health therapy chatbots. Appropriate safeguards need to be in place to protect the most vulnerable in society. This is a timely reminder that AI cannot replicate genuine human empathy, and appropriate signposting to in-person mental health support is more vital now than ever before.
"AI should be integrated thoughtfully to support, not directly replace human-led care, after all, human support is essential to mental health therapy. The government must invest in expanding the mental health workforce to help meet rising demand. Only then can we ensure those struggling can access in-person support before they reach crisis point".
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