Genes are the blueprints that code many of the processes in our bodies, including the regulation of brain chemicals that play a role in the development of depression. Although no single depression gene has been found, several have been identified that may confer risk of clinical depression.
Clinical depression is more than just the blues. It is a chronic and debilitating mental disorder that is believed to result from a combination of multiple causes. Personality patterns, genetics and life events are all thought to play a role.