In any given 1-year period, 9.5 percent of the population, or about 18.8 million American adults, suffer from a depressive illness5 The economic cost for this disorder is high, but the cost in human suffering cannot be estimated. Depressive illnesses often interfere with normal functioning and cause pain and suffering not only to those who have a disorder, but also to those who care about them. Serious depression can destroy family life as well as the life of the ill person. But much of this suffering is unnecessary.
Most people with a depressive illness do not seek treatment, although the great majority—even those whose depression is extremely severe—can be helped. Thanks to years of fruitful research, there are now medications and psychosocial therapies such as cognitive/behavioral, "talk" or interpersonal that ease the pain of depression.
Unfortunately, many people do not recognize that depression is a treatable illness. If you feel that you or someone you care about is one of the many undiagnosed depressed people in this country, the information presented here may help you take the steps that may save your own or someone else's life.
Adapted from: http://www.nimh.nih.gov/publicat/depression.cfm