The scientific study of the human heart is called cardiology. Cardiology is a branch of medicine that focuses on the structure, function, disorders, and treatment of the heart and the circulatory system. Cardiologists are medical professionals who specialize in diagnosing and treating heart diseases and conditions, conducting research, and providing care for patients with cardiovascular disorders. Cardiology encompasses various sub-disciplines, including preventive cardiology, interventional cardiology, electrophysiology, and cardiac imaging, among others.