ChatGPT Health: First independent evaluation raises safety questions

ChatGPT Health, a widely used consumer artificial intelligence (AI) tool that provides health guidance directly to the public—including advice about how urgently to seek medical care—may fail to direct users appropriately to emergency care in a significant number of serious cases, according to researchers at the Icahn School of Medicine at Mount Sinai. The study, fast-tracked in the February 23, 2026 online issue of Nature Medicine, is the first independent safety evaluation of the large language model (LLM)-based tool since its January 2026 launch. It also identified serious concerns with the tool's suicide-crisis safeguards.