I am pleased to see such a lively discussion generated from my article. My argument is that this mass profliferation of what gets labelled as mental illness is not something that is new but has been going on for a century. Psychiatrists wanted to escape the asylums to which they were confined to and work in the community, with private practices, and psychotherapy allowed them to do so, but this required a shift in focus in the sorts of problems they dealt with to more minor problems, and it was in the interests of the profession to convince people they were ill.
As a mental health professional myself I provide psychotherapy, prescribe antidepressants, antipsychotics etc and these treatments have some indications. My contention is some sectors of the mental health industry flourished and profit from convincing people that they are ill, or in need of counselling or medication, when they do not in fact. The threshold for the sorts of problems and emotions that we are expected to seek professional help has lowered. This in itself would be fine if our treatments actually helped, but we often to more harm than good for people with social ills, common unhappiness, misery that is not best described and managed as mental illness.
Alameda is sort of right, the 'chemical imbalance' notion is a marketing rather than medical term, and most doctors do not use this term anymore. In my training we not once are told that mental illnesses are due to chemical imbalances, as this is not only an oversimplification but is just not true. There is not a jot of evidence to support this. It just makes it more palatable to individuals who are prescribed medications to have this explanation the drugs are correcting 'chemical imbalances'. I use medications to treat my patients when I believe they may be of benefit, but I don't pretend I know how they work and it doesn't matter to me I just want to help my patients with whatever works best. We learn about the mechanism of action of medications and talking treatments, and the neurobiology of mental illness, but this notion of mental illnesses as being due to 'chemical imbalances' is simply misleading.
Even if mental illnesses were associated with a chemical imbalance, the real question is what causes this chemical imbalance? For example in schizophrenia, brain imaging studies show increased release of dopamine in a part of the brain involved in emotion and thinking (the mesolimbic system). But what is responsible for this? By reducing complex thoughts and feelings to a neurochemical soup we end up dodging the real issues and complexities of mental health problems, and the minor misery and disaffection that permeate our society.
I won't harp on about the counselling industry now, but be sure I will be writing about though very shortly :o