Measuring cholesterol levels has long been the main way doctors assess the risk of heart disease. Increasingly, people are opting, too, for a simple, relatively affordable test: a coronary artery calcium scan.Here’s more to know about the scans: 🔗 https://t.co/EmsVStTN7H pic.twitter.com/d00T6rKWxB— The Wall Street Journal (@WSJ) April 25, 2026