A columnist fed years of Apple Watch health data to ChatGPT — with disastrous results
by Horace Dediu
A tech columnist finds the Apple Health ChatGPT integration raises major red flags after feeding the AI bot a decade of Apple Watch data.
ChatGPT launched its ability to integrate Apple Health data on January 7, 2026. So Fowler connected ChatGPT Health to 29 million steps and 6 million heartbeat measurements stored in his Apple Health app, then asked the bot to evaluate his cardiac health. The results alarmed Fowler: ChatGPT gave him an F grade. Panicked, he went for a run and sent the report to his actual doctor.
His doctor’s response? “No,” Fowler wasn’t failing. In fact, his heart attack risk was so low that insurance likely wouldn’t cover additional testing to prove the AI wrong.
“The more I used ChatGPT Health, the worse things got,” Fowler wrote.
NB:
LLMs don't make good doctors. In fact they are quite dangerous. An opportunity for Apple to expound on its descriptive vs. prescriptive approach to health data.
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