We’ve heard that the “mental illness epidemic” is a major public health crisis in the US, perhaps even globally. The claim is that rates of mental illness have skyrocketed in recent decades, and now as many as 1 in 4 people have a mental disorder. The epidemic is the subject of numerous media publications, books and scientific articles, and public rallying cries. Numerous researchers and advocacy groups point to the “mental illness epidemic” as a major public health crisis. A 2017 WHO report even states that depression is the leading cause of disability worldwide. Drug companies, governments, nonprofits, and laypeople alike use claims of a “mental illness epidemic” in pushing for changes to mental health treatment (expanding care, developing new drugs, challenging stigma, etc.).