Suicide is a significant public problem, directly or indirectly affecting the lives of many Americans each year. There have been many different explanations for suicide over the centuries. Many who commit suicide suffer from medically identifiable depression. Clinicians must be alert for subtle self-destructive behaviors that reflect depression. Currently, in the United States, teenagers are increasingly at risk for suicide. Parents and teachers are in key positions to promote healthy living environments for this age group, recognizing suicidal behaviors and taking them seriously. This is the first step toward intervention.