A Florida man is suing OpenAI over ChatGPT-generated medical advice, alleging that its flagship chatbot failed to recognize early signs of a medical crisis and nearly caused his death. Brought by Scott Winters, a 55-year-old pastor and real estate professional, the lawsuit accuses OpenAI of negligence and of engaging in the “unauthorized practice of medicine.” Winters said in a statement, “I had serious symptoms of a pulmonary embolism for six weeks that ChatGPT had wrongly attributed to something else.” According to the lawsuit, Winters started using ChatGPT in June 2024, and though initial responses included disclaimers to consult medical professionals, the bot eventually stepped “into the role of a medical practitioner” and “began to offer specific care directives without including the disclaimer to consult a medical provider.” In April 2025, OpenAI rolled out a cross-chat memory upgrade that allowed ChatGPT to reference past conversations. After this upgrade, Winters’ suit claims, ChatGPT’s responses became more personal, sometimes mixing his Biblical studies into AI-generated medical advice. The lawsuit accuses ChatGPT of “downplaying” Winters’ “dizzy spells” while “offering specific regimens for prescription medications.”