Tech, lifestyle keys to fighting heart disease

Despite advances in medical technology and procedures, heart disease remains the No. 1 killer in this country. According to the Centers for Disease Control and Prevention, about 600,000 Americans die from it every year — more than all forms of cancer combined. And a study in the Journal of the American Medical Association claims that more than half of all U.S. citizens over the age of 45 will develop some form of heart disease in their lifetime.

But this is nothing new. Health-care professionals have been preaching the benefits of lifestyle changes for years. So why is…