The Facts

One in five people will experience mental illness in any given year. That means someone you know suffers from mental health issues.

Millions of Americans are affected by mental health conditions every year. Below, you can find more facts about the prevalence and impact of mental illness from the National Alliance on Mental Illness.

  • Approximately 1 in 25 adults in the U.S.—9.8 million, or 4.0%—experiences a serious mental illness in a given year that substantially interferes with or limits one or more major life activities.
  • An estimated 26% of homeless adults staying in shelters live with serious mental illness and an estimated 46% live with severe mental illness and/or substance use disorders.
  • 6.9% of adults in the U.S.—16 million—had at least one major depressive episode in the past year.
  • Only 41% of adults in the U.S. with a mental health condition received mental health services in the past year. Among adults with a serious mental illness, 62.9% received mental health services in the past year.
  • Serious mental illness costs America $193.2 billion in lost earnings per year.
  • Over one-third (37%) of students with a mental health condition age 14­–21 and older who are served by special education drop out—the highest dropout rate of any disability group
  • 18.1% of adults in the U.S. experienced an anxiety disorder such as posttraumatic stress disorder, obsessive-compulsive disorder and specific phobias.
  • Each day an estimated 18-22 veterans die by suicide.
  • Among the 20.2 million adults in the U.S. who experienced a substance use disorder, 50.5%—10.2 million adults—had a co-occurring mental illness.