On Therapeutic Lifestyle change:
"Across the industrialized modern world, clinical depression has reached epidemic proportions, despite a staggering increase in the use of antidepressant medication. In fact, researchers have identified a set of illnesses that are pervasive across the Western world and yet rare among aboriginal populations. Depression is now the single leading cause of work-related disability for adults under 50. And yet there is strong evidence that depression can be both prevented and treated through a set of straightforward changes in lifestyle.