This MercatorNet article talks about how the APA (American Psychiatric Association) plans to expand the category of mental disorder to include lust, greed, and gluttony. These habits were traditionally considered to be vices to be reformed and not disorders to be treated.
Another example which illustrates the author’s thesis is when the racist baseball player John Rocker was asked by the MLB Commissioner to see a psychiatrist i.e. racism is a psychological, not a moral, problem. Whether his comments were mentally disturbed or immoral will affect how we perceive, and thus evaluate, his words: Should Rocker lie on a couch, pop pills, or be held accountable for his actions?