Effect of serious mental illness in US: Prevalence, cost and more

Of the estimated 52.9 million adults in the U.S. diagnosed with a mental illness, 14.2 million fit the diagnostic criteria for a serious mental illness, seriously affecting patients, the healthcare industry and more.

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In the U.S., 5.2 percent of adults experienced a serious mental illness, and rates have risen every year since 2011, according to data from the HHS’ Substance Abuse and Mental Health Services Administration. 

A breakdown of the prevalence of mental illness in U.S. adults:

Age group

Population with mental illness

Population with serious mental illness

All adults 18+

52.9 million (21 percent)

14.2 million (5.6 percent)

Age 18-25

10.2 million (30.6 percent)

3.3 million (9.7 percent)

Age 26-49

25.7 million (25.3 percent)

7 million (6.9 percent)

Age 50+

16.9 million (14.5 percent)

4 million (3.4 percent)

 

More information on serious mental illness, using data from the American Psychiatric Association: 

  1. Of the 14.2 million adults with serious mental illness, 34.5 percent did not receive treatment. Here is a breakdown of the reasons they provided:
    • 46.9 percent said they could not afford treatment.
    • 24.8 percent said they did not know where to go for treatment.
    • 23.7 percent said they thought they could manage their illness without treatment.
    • 19.9 percent were concerned about being committed to a psychiatric hospital and taking medication.
    • 19 percent said they did not have time to receive treatment.
    • 17.1 percent said health insurance does not pay enough for mental health services.
    • 7.6 percent said health insurance does not cover any mental health services.
    • 11.9 percent said they do not have insurance coverage.
  1. The economic effect of serious mental illness in the U.S. is $317.6 billion per year. Here is how those costs break down:
    • Loss of earnings: $193.2 billion
    • Healthcare costs: $100.1 billion 
    • Disability benefits: $24.3 billion
  1. Of adults with serious mental illness in the U.S., 3.6 million have a co-occurring substance use disorder. Here is a breakdown by age:

Age group

Population with co-occurring substance use disorder

Age 18-25

958,000

Age 26-49

2 million

Age 50+

607,000

 

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