Cardiovascular Risk Reduction With GLP-1 RA Drugs

GLP-1 (glucagon-like peptide-1) receptor agonists (RAs) have emerged as a major therapeutic advance in cardiometabolic medicine. Initially developed as glucose-lowering therapies for type 2 diabetes, these agents have demonstrated broad benefits that extend well beyond glycemic control. GLP-1 RAs enhance glucose-dependent insulin secretion and reduce appetite, leading to improved glycemia and sustained weight loss. In addition, GLP-1 signaling exerts vascular and myocardial effects, including improved endothelial function, reduced inflammation and oxidative stress, and favorable changes in cardiac metabolism and remodeling. Large randomized cardiovascular outcomes trials have consistently shown that several GLP-1 RAs reduce major adverse cardiovascular events, including myocardial infarction, stroke, cardiovascular death, and heart failure. Benefits have been observed across diverse populations, including individuals with established cardiovascular disease and those with obesity but without diabetes. Emerging therapies targeting multiple incretin pathways, such as dual GIP (glucose-dependent insulinotropic polypeptide)-GLP-1 RAs, may further extend these benefits. Collectively, these findings suggest that GLP-1 RAs influence multiple cardiometabolic pathways and may shift the underlying metabolic milieu toward a more favorable physiological state. In this Clinical Primer, we review the physiology of GLP-1 signaling, the evidence supporting cardiovascular risk reduction, and practical considerations for the clinical use of incretin-based therapies.