CODEX Director Sumant Ranji featured in The Wall Street Journal

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Would you upload your medical records to ChatGPT?

Millions of Americans already have. A new article from The Wall Street Journal notes that one-third of adults turned to AI for health advice in the past year, and 41% of them uploaded personal medical records to a chatbot to do it.

WSJ tech columnist Nicole Nguyen put this to the test firsthand, adding her own health data to several AI platforms to assess the risks personally. And knowing that AI tools are prone to making up information, she turned to UCSF CODEX Director Dr. Sumant Ranji to evaluate the accuracy of what came back.

Dr. Ranji's view is clear: consumer AI tools offer no privacy protections for your health data. But with so many patients already doing it, understanding the real risks and benefits matters. Not all chatbots respond the same way, and the differences are important.

Curious which chatbot came out on top? Read the full article to walk through the prompts and responses they received from different platforms.