Clinical depression is one of many mental disorders affecting 1 in 10 Americans today. This disorder is characterized by ongoing feelings of sadness and despair which leads to anxiety, agitation, feelings of emptiness, and loss of self-worth. Following these initial symptoms are possible weight loss or gain, insomnia, lack of energy, unusual indecisiveness, and even suicidal thoughts or attempts. There are many possible causes of major depression; however, very often the disease strikes without any triggering cause which leads to a great deal of frustration by the affected person and his or her loved ones. Fortunately, scientists have narrowed the lis