02/05/2026
While a hard calcium score (Coronary Artery Calcium or CAC) represents permanent calcified plaque that is generally not reversible by standard medical means, your book is likely highlighting that endothelial dysfunction is the underlying driver of new plaque formation and current heart risk.
Focusing on the endothelium (the inner lining of your blood vessels) is a strategy to stabilize existing plaque and prevent the development of "soft" plaque, which is more prone to rupturing and causing heart attacks.
