A viral headline claims your Apple Watch can detect heart disease with 99% accuracy—but what if this sensational statistic is dangerously misleading? Researchers presented a preliminary study suggesting AI-powered smartwatch ECGs might screen for structural heart disease, but the reality is far more nuanced. With only 86% sensitivity, the test misses one in seven serious heart conditions, and a staggering 73% of positive results are false alarms. This episode unpacks how a single statistical metric can create a false sense of security, potentially causing people to skip critical medical evaluations. We'll dive deep into the research, exposing how preliminary science gets transformed into misleading headlines that could put lives at risk.

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