The Numbers Count: Mental Disorders in America
Mental Disorders in America
Mental disorders are common in the United States and internationally. An estimated 26.2 percent of Americans ages 18 and older — about one in four adults — suffer from a diagnosable mental disorder in a given year.1 When applied to the 2004 U.S. Census residential population estimate for ages 18 and older, this figure translates to 57.7 million people.2Even though mental disorders are widespread in the population, the main burden of illness is concentrated in a much smaller proportion — about 6 percent, or 1 in 17 — who suffer from a serious mental illness.1 In addition, mental disorders are the leading cause of disability in the U.S. and Canada for ages 15-44.3 Many people suffer from more than one mental disorder at a given time. Nearly half (45 percent) of those with any mental disorder meet criteria for 2 or more disorders, with severity strongly related to comorbidity.1
Mood disorders include major depressive disorder, dysthymic disorder, and bipolar disorder.
Approximately 20.9 million American adults, or about 9.5 percent of the U.S. population age 18 and older in a given year, have a mood disorder.1
The median age of onset for mood disorders is 30 years.5
Depressive disorders often co-occur with anxiety disorders and substance abuse.5
Major Depressive Disorder
Major Depressive Disorder is the leading cause of disability in the U.S. for ages 15-44.3
Major depressive disorder affects approximately 14.8 million American adults, or about 6.7 percent of the U.S. population age 18 and older in a given year.1
While major depressive disorder can develop at any age, the median age at onset is 32.5
Major depressive disorder is more prevalent in women than in men.6
Dysthymic Disorder
Symptoms of dysthymic disorder (chronic, mild depression) must persist for at least two years in adults (one year in children) to meet criteria for the diagnosis. Dysthymic disorder affects approximately 1.5 percent of the U.S. population age 18 and older in a given year.1 This figure translates to about 3.3 million American adults.2
The median age of onset of dysthymic disorder is 31.1
Bipolar Disorder
Bipolar disorder affects approximately 5.7 million American adults, or about 2.6 percent of the U.S. population age 18 and older in a given year.1
The median age of onset for bipolar disorders is 25 years.5
http://www.nimh.nih.gov/health/publications/the-numbers-count-mental-disorders-in-america/index.shtml