For generations, medicine has struggled to answer whether the tools we use to protect younger hearts can still serve those who have lived longest. A decade-long Australian trial, following nearly 10,000 people over the age of 70, has now offered a clear and consequential answer: statins reduce the risk of a first heart attack or stroke by 30 percent in older adults, even when treatment begins late in life. The finding, born of rigorous patience and published in the New England Journal of Medicine, arrives at a moment when 21,000 older Australians face major cardiovascular events each year — an