NEJM This Week — October 31, 2024

Featuring articles on semaglutide in persons with obesity and knee osteoarthritis, the addition of PI3K inhibition in breast cancer, treatments in older patients with myeloma, and total hip replacement for hip osteoarthritis; a review article on lead poisoning; a case report of a man with dyspnea after old myocardial infarction; and Perspectives on large language models and the medical record, on measuring AI against the health care we have, on the failing U.S. health system, and on the contemporary rise of pronatalism.