David Callans

David Callans is a prominent Irish-American cardiologist and researcher known for his work on heart disease, particularly atherosclerosis (the build-up of fats and cholesterol in arteries). He has contributed to understanding how and why these deposits form, aiming to improve prevention and treatment strategies. Dr. Callans works at the University of Pennsylvania, where he combines clinical practice with research to advance cardiovascular health. His work helps doctors better diagnose and manage heart conditions, ultimately aiming to reduce heart attacks and improve patient outcomes.