Mental illness is a term which has been applied liberally to people with all kinds of problems. The Diagnostic and Statistical Manual of Mental Disorders, 5th edition, as with all of the diagnostic handbooks preceding it, includes disorders of such general nature that anyone can be so diagnosed in order to maximize "parity" with physical illness in insurance coverage. As a result, the National Institute of Mental Health estimates of mental disorder incidence now exceeds 50 percent, leading Paul McHugh, the former chief of psychiatry at the Johns Hopkins University School of Medicine, to incredulously observe, "Are you kidding me?" In 2009, the American Psychiatric Association's major journal, Archives of General Psychiatry, published the estimate that "Almost half of college-aged individuals had a psychiatric disorder in the past year." These estimates cannot be proved or disproved, but they are accepted as indisputably true by most observers.