Heart disease is the leading cause of death in the U.S. Because it is so common, there is a good chance that heart disease will affect you in some way and you will need to see a doctor about your heart.

This article discusses how physicians go about diagnosing heart disease so that you can understand the process. In the next article, How Heart Attacks and Angina Work, we will discuss Atherosclerosis (the cause of Coronary Artery Disease). This leads to the main diseases of the next article - Angina and Heart Attacks.

It would be a good idea to read the Article How the Heart Works prior to reading this article for background on the Anatomy and functioning of the heart.