Embedded Player Linda Wertheimer talks with Dr. Stuart Seides, a cardiologist at the Washington Hospital Center, about stress and heart disease. He says frustration and the body's physiological response to it is the key factor in determining whether a job has deleterious effects on health. A high level of responsibility does not automatically mean that that a job is stressful. Seides says if a person feels in control of his or her job, stress should not impact them severely.