NEJM This Week — September 17, 2026

This week, we feature new research on colorectal cancer surveillance, metabolic acidosis in critical illness, pediatric leukemia, and food-allergy prevention. We also review esophageal cancer and follow a case of severe nutritional deficiency and memory loss. Perspectives address AI and the clinical workforce, physician staffing in the Indian Health Service, human trafficking and child health, and the enduring legacy of the HIV epidemic.