I fully agree that drugs are not the answer to depression. They only mask the symptoms and can even allow the underlying depression to develop further if he biochemical abnormality is not treated.
The question is how can depression be treated without recourse to drugs? Talk therapy is not going to help much if the problem is indeed biological, as they invariably are.
Fortunately, most forms of depression can easily be treated nutritionally. The underlying mechanism of depression has to do with a problem in the conversion of sugars in food to biological energy called ATP.
For the body to convert one set of molecules into another set of molecules - as in the conversion of tryptophan into serotonin - it need biological energy. Without it we tend to be depressed, develop anxieties or any other forms of mood disorder.
The brain is highly sensitive to energy starvation and will trigger the release of stress hormones when blood sugar levels are low or drop suddenly - such as adrenaline and cortisol. These hormones convert energy stores in the body - for instance glycogen - into glucose so as to feed the brain again with energy.
Most people with mood disorders have been found to be hypoglycemic when tested with a proper test for hypoglycemia. This is a different from the test for diabetes. It is unfortunate that most doctors are not familiar with this test. This is also possibly the reason why doctors and psychiatrists have a poor record in treating "mental" illness. They do not recognize prediabetic hypoglycemia as a medical condition. This condition is shared among many forms of mood disorders, including drug addiction.