Are You Really Allergic to Penicillin? (Update)

Are You Really Allergic to Penicillin? (Update)

July 17, 2026 · 1h 5m · Episode 617

About this episode

Stephen Dubner explores the misdiagnosis of penicillin allergies and its implications.

Like tens of millions of people, Stephen Dubner thought he had a penicillin allergy. Like the vast majority, he didn’t. This misdiagnosis costs billions of dollars and causes serious health problems, so why hasn’t it been fixed? We find out in this update of a 2025 episode.

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Host: Stephen Dubner

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