"Imagine that a virus suddenly appears in our society that makes people sleep twelve, fourteen hours a day. Those infected with it move about somewhat slowly and seem emotionally disengaged. Many gain huge amounts of weight—twenty, forty, sixty, and even one hundred pounds. Often their blood sugar levels soar, and so do their cholesterol levels. A number of those struck by the mysterious illness—including young children and teenagers—become diabetic in fairly short order…. The federal government gives hundreds of millions of dollars to scientists at the best universities to decipher the inner workings of this virus, and they report that the reason it causes such global dysfunction is that it blocks a multitude of neurotransmitter receptors in the brain—dopaminergic, serotonergic, muscarinic, adrenergic, and histaminergic. All of those neuronal pathways in the brain are compromised. Meanwhile, MRI studies find that over a period of several years, the virus shrinks the cerebral cortex, and this shrinkage is tied to cognitive decline. A terrified public clamors for a cure. Now such an illness has in fact hit millions of American children and adults. We have just described the effects of Eli Lilly’s best-selling antipsychotic, Zyprexa."
—Here's the first part of a very readable New York Review of Books piece on our epidemic of mental illness diagnoses and the treatment thereof.