A new study says on-the-job stress raises a persons risk of heart disease by disrupting the body's internal systems.
The study in the European Heart Journal found chronically stressed workers had a 68 percent higher risk of developing heart disease. They say behavior and biological changes likely explain why stress at work causes heart disease. They say stressed workers eat unhealthy food, smoke, drink and skip exercise. All behaviors linked to heart disease.
Stressed workers also had higher than normal levels of cortisol, a stress hormone that could damage blood vessels and the heart.