Book excerpt: Depression and bipolar disorder are two of the most common diagnoses made in medicine today. Are we in an epidemic of bad moods or is there another explanation? Good Mood, Bad Mood examines whether it is an epidemic or if we have simply changed how we label depression. While medical treatment is now the commonly accepted way to deal with pain and sadness, its promise has not been fulfilled. Dr. Charles Hodges offers an explanation to help the reader see the importance of sadness and the help and hope that God gives us in His Word.