I found this fascinating quote today:

With the everyday stresses from work, parenting and budgeting finances, it’s no surprise that stress has been directly linked to causing heart disease, high blood pressure and decreased immunity. In a survey conducted by the American Institute of Stress, about 75-90 percent of all visits to general physicians are for stress-related problems. While it is difficult to avoid stress altogether, there are several ways to relieve stress and manage it through simple and often free practices that can be done at home and work.Workingwellresources, Working Well Resources’ Blog, Apr 2010

You should read the whole article.