U.S. to limit states’ access to COVID antibody treatments as demand rises … Aggressively reducing Alzheimer’s risk factors could mean 1.2 million fewer cases in 2050: experts … NIH launches nationwide study of long-term COVID effects … Not enough elders screened for abdominal aortic aneurysm, investigators say … Outdated rule raises Medicare’s generic drug costs by $26 billion a year … Use of opioids before hip and knee surgery skyrocketed during pandemic, UK study shows