NEJM Interview: Justin Barr on physician leadership in American society and politics over the past 250 years.

Matthew Vogel is a professor at the Brown University School of Public Health. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. M. Vogel, R. Yaeger, and O.J. Wouters. Clinical Trial Prediction Markets — Information, at What Cost? N Engl J Med 2026;395:1565-1567.

Lena Makaroun is an assistant professor of medicine at the University of Pittsburgh School of Medicine. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. L.K. Makaroun, T.W. Farrell, and M.E. Betz. Firearm-Related Discussions as an Age-Friendly Intervention. N Engl J Med 2026;395:1461-1463.

Sarah Schmitz is an obesity medicine specialist at Weill Cornell Medicine and an assistant attending physician at New York–Presbyterian Hospital. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. S.H. Schmitz. Beyond Percentage of Weight Lost — Protecting Participants in Obesity Trials. N Engl J Med 2026;395:1355-1357.

Benjamin Scher is a lecturer and postdoctoral research associate in the Global Health Program at Princeton University. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. B.D. Scher and H.H. Howard. Opioid-Settlement Funds — Lessons from Tobacco. N Engl J Med 2026;395:1249-1251.

Christopher Forrest is a professor of pediatrics and the director of the Applied Clinical Research Center at Children’s Hospital of Philadelphia. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. C.B. Forrest and N. Halfon. Declining Child Health in the United States — Addressing the Developmental Ecosystem. N Engl J Med 2026;395:1147-1149.