From Vitalism to Evidence-Based Care: The Evolution of Chiropractic Thought

Abstract
We will explore the intertwined histories of vitalism, chiropractic, and subluxation theory. Let's trace chiropractic’s philosophical origins in 19th-century vitalism, the development of spinal subluxation theory by D.D. Palmer, and the subsequent transformation of chiropractic into a modern evidence-based healthcare discipline. The paper examines how scientific advancements have challenged traditional concepts, leading to a shift from metaphysical frameworks to biomechanical and neuromuscular models of care.

The History of Vitalism

Vitalism is the belief that living organisms are governed by a special non-material force distinct from physical and chemical processes. Originating in antiquity, philosophers such as Aristotle posited the existence of a psyche or life force responsible for the organization and function of living beings (Normandin & Wolfe, 2013). Throughout the Renaissance and Enlightenment, figures like Stahl and Blumenbach promoted theories of “animating spirits” and “formative drives” to explain biological complexity. The decline of vitalism began with Friedrich Wöhler’s 1828 synthesis of urea, which demonstrated that organic compounds could be created outside a living body (Gayon, 2005).

The History of Chiropractic

Chiropractic was founded by D.D. Palmer in 1895 in Davenport, Iowa. Influenced by the prevailing ideas of vitalism and magnetism, Palmer developed the concept of Innate Intelligence, a life force flowing through the nervous system, which he believed regulated health (Palmer, 1910/1966). Palmer claimed that spinal misalignments, which he called subluxations, interfered with this vital flow and were the root cause of disease. He positioned chiropractic as a distinct healing art separate from medicine and surgery, grounded in natural law and metaphysics.

The Development of Subluxation Theory

Subluxation theory became the philosophical core of chiropractic. Early chiropractors believed that spinal adjustments could correct subluxations and thereby restore health by unblocking Innate Intelligence (Keating et al., 2005). Unlike orthopedic subluxations, which are partial dislocations visible on imaging, chiropractic subluxations were functional or energetic disturbances, lacking consistent physical evidence. Despite internal debate and external criticism, the concept became institutionalized in chiropractic education and licensing throughout much of the 20th century.

Evolution into Modern Chiropractic

By the late 20th century, chiropractic began to confront pressure from within and outside the profession to modernize. Scientific criticism, legal battles, and the rise of evidence-based healthcare forced a reevaluation of subluxation theory. Contemporary chiropractic now includes a broad spectrum of philosophies:

• Traditional chiropractors continue to embrace vitalism and the centrality of subluxation.

• Mixed-practice chiropractors integrate manual therapy with nutrition, wellness, and lifestyle coaching.

• Evidence-based chiropractors reject metaphysical constructs and focus on musculoskeletal care grounded in biomechanics, pain science, and rehabilitation (Leboeuf-Yde et al., 2005).

Organizations such as the World Federation of Chiropractic and various academic institutions have called for the de-emphasis or removal of subluxation language from professional definitions and curricula (Mirtz et al., 2009). Today, chiropractic increasingly operates within interdisciplinary healthcare, contributing to spine care, conservative pain management, and functional rehabilitation.

Conclusion

Chiropractic emerged from a vitalistic worldview that viewed life as governed by an immaterial force. The early subluxation theory reflected this heritage but has since evolved in response to scientific, philosophical, and clinical developments. While traditional concepts persist in some corners of the profession, modern chiropractic increasingly embraces evidence-based approaches, aligning with mainstream healthcare and biomedical science.

References 

Gayon, J. (2005). Vitalism and the problem of regulation in biology. Science in Context, 18(3), 315–330. https://doi.org/10.1017/S026988970500049X

Keating, J. C., Cleveland, C. S., & Menke, M. (2005). Chiropractic history: A primer. Association for the History of Chiropractic.

Leboeuf-Yde, C., Hestbæk, L., & Kyvik, K. O. (2005). Evidence-based practice in chiropractic care: A systematic review of interventions. Chiropractic & Osteopathy, 13(1), 10. https://doi.org/10.1186/1746-1340-13-10

Mirtz, T. A., Hebert, J. J., & Wyatt, L. H. (2009). The subluxation construct in chiropractic: Myth or reality? Chiropractic & Osteopathy, 17(1), 11. https://doi.org/10.1186/1746-1340-17-11

Normandin, S., & Wolfe, C. T. (Eds.). (2013). Vitalism and the scientific image in post-Enlightenment life science, 1800–2010. Springer.

Palmer, D. D. (1966). The science, art and philosophy of chiropractic (2nd ed.). Chiropractic Fountainhead. (Original work published 1910)