Where Does It Hurt? Probing American health care. Illustration: Olivier Heiligers From the wide-open showroom floor of the Ernest N. Morial Convention Center in New Orleans, where the American Diabetes Association recently held its annual conference, the days of “living with overweight and obesity” (in clunky pharma-speak) seem numbered. Over the last decade, this conference has become for weight-loss drugs what Cannes is to the film industry: an opportunity for thousands of insiders to get a