The real question is: Is depression treatable? This depends what causes you to be depressed. There is environmental depression, triggered by some environmental event like the death in the family, rejection in love, or following any stressful situation. In this kind of depression the person usually knows the reason for depression and often after effluxion of time, the person recovers and starts to feel happy again. (Starts to produce serotonin again).
depression, the person is usually at a loss to understand why she/he is depressed and may seek the help of a professional. It is unfortunate that, in my opinion, most professionals are at a loss to understand the true reasons for depression and resort to either drugs and/or "talk therapy" as the standard treatment for depression or mood disorders in general. Only a minority seems to get some benefit from conventional treatment, and only if the mood disorder is of the simple kind and not the complex kind.
Most people finish up having to take drugs for the rest of their life under conventional treatments. Drugs appear to treat symptoms only, but not the underlying biochemical imbalance responsible for depression.
There are many alternative approaches to the treatment of depression examples of which are given at this discussion board. This board is a multi-disciplinary board.
Being a nutritional psychologist mine represents the psychonutritional approach to mood disorders primarily of the biological type on the ground that most of our happy hormones and neurotransmitters - enabling us to experience contentment and happiness - are derived from natural food sources. This is an evidence-based scientific approach. Furthermore I believe that by educating clients about the science of nutritional biochemistry - that is less complicated than appears at first sight - most clients are able to overcome their depression or other mood disorder by the tools of psychotherapy - including the biological as well, as the "psychological". This is achieved by reference to educational material in the form of articles available on the internet.
Thus yes, my opinion is that depression - either environmental or biological - is treatable without recourse to drugs and often without recourse to any talk therapy, provided the client is willing to take the time to study. As an alternative the client has a choice to consult a Nutritional Doctor, Clinical Nutritionist or a Nutritional Psychologist. See for an overall view:
Self Help Personal Growth Program