Heart disease is the No. 1 cause of death in the United States. These are the steps you need to take to reduce your risk.

A heart attack occurs when the blood flow that brings oxygen to the heart is reduced or cut off. If blood flow is reduced or ...

There are many different types of heart disease. Most happen due to plaque build-up from conditions like high blood pressure ...

Smithsonian biologists are using heart monitors designed for humans to study how high stress levels in animals can hinder ...