The National Institute of Mental Health is scientific organization dedicated to researching mental illness in order to promote understanding and treatment.  This site contains information on the signs, symptoms and treatment of depression.

The American Psychiatric Association is a medical organization comprised of psychiatrists dedicated to ensuring quality care and effective treatment for people with mental disorders.

The American Psychological Association is a professional organization comprised of psychologists dedicated to advancing the communication and application of psychological knowledge for the benefit of society.

Mental Health America is a non-profit organization dedicated to promoting mental health and raising awareness about mental disorders through advocacy, education and research.  The site contains information on a variety of mental health topics including depression.

A division of the US Department of Health and Human Services, the Substance Abuse and Mental Health Services Administration facilitates recovery for people with or at risk for mental or substance abuse disorders.

The American Academy of Child and Adolescent Psychiatry is a non-profit membership based organization dedicated to improving the quality of life for children, adolescents and families affected by mental, behavioral or developmental disorders.

National professional organization dedicated to promoting the mental health and well being of the elderly through advocacy, education and research.

Established by the American Association for Geriatric Psychiatry, the Geriatric Mental Health Foundation is committed to raising awareness about psychiatric and mental health disorders affecting the elderly.

While the CDC is not a mental health agency, staff members from across CDC whose work relates to mental health established the mental health work group, and this Web site, to support CDC's overall public health efforts.