A brain-based explanation and a religious belief are not automatically opposites. One old medical text makes that especially clear: it argues for natural causes while still calling those causes divine. The interesting question is how a particular writer used those ideas—not which side an entire civilization supposedly chose.
This page compares a few texts and institutional statements. It does not test religious beliefs, recommend treatment or claim that faith improves or harms health.
An ancient argument about the brain
In On the Sacred Disease, preserved in the Hippocratic collection, the writer rejects the idea that the disease under discussion is uniquely sacred. In Francis Adams’s translation, the account turns to bodily causes. A later passage connects joy, grief, understanding and disturbed mental experience with the brain (Adams translation).
Those are Documented statements in the text. They contradict the popular claim that premodern explanations were exclusively spiritual. They do not make the treatise (a formal written argument) a modern account of the nervous system.
The ending is just as revealing. The writer calls the natural causes divine and describes diseases as both divine and human. A bodily explanation did not require this author to reject divinity. The larger ancient Greek discussion appears in this series’ article on ancient Greece and the mind.
The comparison stays narrow. One treatise cannot represent all Greek people, much less everyone before modern medicine. Nor should an old translated category be assigned a modern psychiatric diagnosis without additional evidence.
What Engel proposed in 1977
George L. Engel, a physician at the University of Rochester, published “The Need for a New Medical Model: A Challenge for Biomedicine” in 1977. The full text is available in an authorized later reprint (Engel, reprint pp. 377, 386–387).
Engel argued that a medical model needed to consider the person, the social setting and the healthcare system, alongside biological processes. He called his proposed framework biopsychosocial: biological, psychological and social. This is Documented as his argument.
It was a challenge to how medicine defined its responsibilities. It was not a declaration that spiritual explanations and biological explanations were equally established. Nor did it show that each factor contributes the same amount in every situation. Describing a proposal is different from demonstrating that everyone adopted it.
Three WHO documents, three different jobs
The World Health Organization’s constitution names physical, mental and social well-being in its definition of health. It does not add “spiritual” to that list (WHO constitution). That is Documented wording, not proof that WHO has no other work concerning religion or spirituality.
A separate document, the International Classification of Functioning, Disability and Health, or ICF, concerns describing functioning and disability. WHO records its endorsement on May 22, 2001 (WHO ICF page).
WHO then published a 2002 beginner’s guide. Its explanation brings medical and social approaches together and uses the word “biopsychosocial” (guide, pp. 8–10). These are Documented institutional records.
The dates should not be collapsed. A 2002 guide is not evidence that WHO adopted Engel’s entire model in that year, and it does not establish any single date of worldwide acceptance.
Studying religion is not the same as proving a spiritual cause
Kenneth I. Pargament’s book is titled The Psychology of Religion and Coping: Theory, Research, Practice. The publisher dates the hardcover to 1997 and the paperback to 2001 (Guilford edition record).
Bibliographic records also identify a 1998 article by C. G. Ellison and J. S. Levin called “The Religion-Health Connection: Evidence, Theory, and Future Directions,” and a 2003 article by L. H. Powell, L. Shahabi and C. E. Thoresen called “Religion and Spirituality: Linkages to Physical Health” (Ellison–Levin record; Powell and colleagues record).
The records establish publications. They do not, by themselves, establish any conclusion about prayer, mortality or mental-health outcomes. This page makes none.
How we know
What survives. An older translation of an ancient treatise, Engel’s reprinted essay, WHO’s own documents and publisher/library records.
Whose voices are missing. The people whose experiences these models tried to explain. A physician’s theory or an institutional definition is not their testimony.
What remains unknown here. How representative each model was across communities, and how people combined different explanations in daily life. No worldwide “spiritual East” or “biological West” follows from this source set.
Then vs. now
Then: The ancient text joined bodily explanation and divinity. Engel later proposed a framework extending beyond biology alone.
Now: Their statements can be examined without turning them into treatment claims. The historical task is to identify who said what, in which document, and what that document can actually establish.