Depression

The Depression topic includes research on the causes, diagnosis, prevention, and treatment of clinical depression, as well as depressive symptoms and grief.

Depression (also called major depressive disorder or clinical depression) is different from feeling sad or low sometimes. It is one of the most common mental disorders in the United States. 

Depression can cause symptoms that can affect how you feel, think, and handle daily activities, such as sleeping, eating, or working. It is an illness that can affect anyone—regardless of age, race, income, culture, or education. Research suggests that genetic, biological, environmental, and psychological factors play a role in depression. It is linked to increased health care costs and other health conditions, such as heart disease and diabetes. It is also a risk factor for suicidal thoughts and behaviors.