The American Institute of Stress notes...

The American Institute of Stress notes that 75 to 90 percent of visits to primary care physicians are for stress-related complaints . . . A Harvard study shows that people who live in a state of high anxiety are four and a half times more likely to suffer sudden cardiac death than nonanxious individuals . . . An international investigation reveals that people who are unable to effectively manage their stress have a 40 percent higher death rate than their nonstressed counterparts.