What is depression?
A depressive disorder is a whole-body illness, involving the body, mood, and thoughts, and affects the way a person eats and sleeps, feels about himself or herself, and thinks about things. It is not the same as being unhappy or in a blue mood. Nor is it a sign of personal weakness or a condition that can be willed or wished away. People with a depressive illness cannot merely "pull themselves together" and get better. Without treatment, symptoms can last for weeks, months, or years. Appropriate treatment, however, can help most people who suffer from depression. During any one year period, nearly 19 million American adults suffer from depressive illness. Yet, treatment can alleviate symptoms in nearly 80 percent of cases.