A man has sued OpenAI after he said ChatGPT dissuaded him from going to the hospital over a serious health issue, manipulated him using references to his Christian faith, and offered him misleading health information that contributed to a near-fatal pulmonary embolism.

The lawsuit brought by 55-year-old pastor Scott Winters says ChatGPT-4o “repeatedly and insistently misdiagnosed” his symptoms, while urging him to “take it easy” and remain in his chair.

The long periods of seated inactivity are likely to have contributed to a massive pulmonary embolism Winters experienced last year.

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Psychological dependence