Heart disease is the leading cause of death for both men and women in the United States. Heart disease describes a variety of disorders and conditions that can affect the heart.  The key to preventing heart disease is a healthy lifestyle.  Also, the more knowledge you have about your family's medical history, the better prepared you'll be to prevent heart disease. Medical Director for Non-Invasive Cardiology & Cardiac Rehabilitation at MemorialCare, Dr. Robert Greenfield, MD shares the simply ways you can lower your risk and avoid heart disease.