Overview: Is that twinge in your chest heartburn or a heart problem? In 2006, more than 600,000 Americans-26% of all deaths in the US that year-died of heart disease, making it our nation's #1 killer. Now, Mayo Clinic provides a comprehensive, step by-step plan to reduce the risks and life-changing effects of heart disease. In The Mayo Clinic Healthy Heart for Life!, Mayo Clinic provides up-to-date, clinically proven information that addresses...