The “bible” of American psychiatry – a manual of mental health used around the world by doctors, consumers and insurance providers – has come under fire from a growing group of psychologists who worry that proposed revisions will feed into a culture of overdiagnosing, and overtreating, otherwise healthy people.

The Diagnostic and Statistical Manual of Mental Disorders, or the DSM, is undergoing its fifth major revision in the more than 60 years since it was first published by the American Psychiatric Association. The last update was in 1994, and the new manual is expected to be released in spring 2013.