Every twenty seconds, a heart attack strikes someone in America, killing five hundred thousand a year. That's fifty-seven deaths every hour, almost one per minute. In the United States and many nations, it's the leading cause of death among adults over age forty.
The most lethal kind of heart problem--called sudden cardiac arrest (SCA) --occurs when your ticker's electrical system goes haywire and stops pumping blood to the rest of your body. SCA accounts for an estimated 325,000 deaths every...
]]>