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? And how about all the other things we think we’re allergic to?

• SOURCES:
  • Kimberly Blumenthal, allergist-immunologist and researcher at Mass General Hospital and Harvard Medical School.
  • Theresa MacPhail, associate professor of science and technology studies at Stevens Institute of Technology.
  • Thomas Platts-Mills, professor of medicine at the University of Virginia.
  • Elena Resnick, allergist and immunologist at Mount Sinai Hospital.

• RESOURCES:
  • Allergic: Our Irritated Bodies in a Changing World, by Theresa MacPhail (2023).
  • "Evaluation and Management of Penicillin Allergy: A Review," by Erica S. Shenoy, Eric Macy, and Theresa Rowe (JAMA, 2019).
  • "The Allergy Epidemics: 1870–2010," by Thomas Platts-Mills (The Journal of Allergy and Clinical Immunology, 2016).
  • "Randomized Trial of Peanut Consumption in Infants at Risk for Peanut Allergy," by George Du Toit, Graham Roberts, et al. (The New England Journal of Medicine, 2015).

• EXTRAS:
  • Freakonomics, M.D.