“Like any other form of medical illness or disease, major depressive disorder results in a good deal of suffering, incapacity and, often, vocational disability,” says psychiatrist Ronald Pies, a professor at Upstate Medical University in Syracuse and Tufts University School of Medicine in Boston.
About one in 14 adults in the United States are depressed. That is about 16 million Americans. In addition, some 2 million adolescents from age 12 to 17 deal with depression. Pies says people with depression are at increased risk for cardiovascular disorders, diabetes and suicide.