The serotonin theory of depression: a systematic umbrella review of the evidence
This has been known to Jungians for a while; matter is down stream of spirit/soul/psyche. Consciousness comes out of the Unconscious; ‘Something’ comes from ‘Nothing’; ‘Light’ comes from ‘Darkness’, etc, etc, these esoteric and symbolic themes repeat in every culture. If you treat the soul, the body and the chemicals that make it up will follow. This is attested to by the Placebo Effect which is the Mind/Soul -> Body connection on display.
“Depression is like a woman in black. If she turns up, don’t shoo her away. Invite her in, offer her a seat, treat her like a guest and listen to what she wants to say. Quite often, the hands will solve a mystery that the intellect has struggled with in vain.”Carl Jung
Different people will respond better to the schools of psychology that best fit their type. Introverted – Intuitive people are better served by Jungian Schools. Extraverted sensate people are better served by Freudian Schools, etc, etc. There is no one size fit all panacea; each person and soul is different. And though types are not set in stone, they are “tendencies” after all, they do help steer psychologists to a method that might help a person better than another psychological method or school. There will always be exceptions to the rule.