Coronary heart disease is the number one killer, worldwide, of men and women over the age of 60. But people of all ages succumb to heart attacks each year. And while death rates have declined in the U.S. and many western European countries, mortality is on the rise in the developing world. Yet most heart disease is preventable. VOA's Carol Pearson says that's a message doctors and advocacy groups are communicating so people the world over can live longer and healthier lives.