Summary
Philosophy of medicine is the field that examines the fundamental questions about what medicine is, how it knows what it knows, and what it ought to do. These questions are ancient — the Hippocratic authors debated whether medicine was an art, a science, or a craft — but the field as a distinct academic discipline dates from the 1970s, when the first Trans-Disciplinary Symposium on Philosophy and Medicine convened in Galveston, Texas, and the series editors observed that few areas of social concern were as pervasive as medicine and yet as underexamined by philosophy. The field is distinct from bioethics, though it supplies the conceptual foundations on which bioethical debates rest: questions about the nature of disease, the structure of clinical reasoning, and the epistemological status of medical evidence are philosophical questions, not ethical ones, though they have ethical consequences.
Origins as a Discipline
The modern field originated from a recognition that medicine posed philosophical problems that could not be adequately addressed by importing general philosophy of science. The first Trans-Disciplinary Symposium on Philosophy and Medicine, held in Galveston in May 1974, was co-sponsored by the Institute for the Medical Humanities at the University of Texas Medical Branch (Carson_Burns_eds, 1997). Marx Wartofsky was instrumental in founding the resulting Philosophy and Medicine book series, and the organizers identified medicine as an area of social concern so pervasive yet so underexamined by philosophy (Carson_Burns_eds, 1997).
The emergence of philosophy of medicine as a discipline is bound up with the parallel emergence of bioethics, and their relationship is one of overlapping but distinct concerns. Warren Reich traced the term “bioethics” itself to two near-simultaneous coinings in 1971: Van Rensselaer Potter at the University of Wisconsin, who envisioned a global, ecology-based ethics of values and survival, and Andre Hellegers and Sargent Shriver at Georgetown University, whose approach was narrower, focusing on the application of normative ethics to concrete dilemmas in medicine and health care (Carson_Burns_eds, 1997). Philosophy of medicine, by contrast, addresses the prior conceptual questions that bioethics takes as its working assumptions: what disease is, how diagnosis proceeds, and what counts as medical knowledge.
The SEP defines philosophy of medicine as exploring fundamental metaphysical and epistemological issues in theory, research, and practice within the health sciences, with historical roots in the Hippocratic corpus and sustained scholarly discussion since the 1800s (Unknown, unknown). It treats bioethics as a distinct field, though philosophy of medicine provides the conceptual foundation for bioethical debates, particularly through its analysis of disease concepts (Unknown, unknown).
The Nature of Disease: Naturalism vs. Normativism
The field’s central debate concerns whether disease is a natural kind or a social construction — whether medical categories carve nature at its joints or impose human values on biological variation.
The naturalist (objectivist) position, led by Christopher Boorse’s Biostatistical Theory, holds that health is the absence of disease, where disease is an internal state impairing normal functional ability relative to a species reference class defined by age and sex (Unknown, unknown). On this account, disease is a matter of biological fact discoverable by science; values enter only in deciding what to do about disease, not in identifying it.
The normativist (constructivist) position holds that definitions of disease and health are functions of social values, not biological discovery. Disease is a divergence from social norms, and historical reclassifications — homosexuality, masturbation, drapetomania — demonstrate that value changes, not new biology, drive disease category revision (Unknown, unknown).
Georges Canguilhem’s work occupies a distinctive position between these poles. He argued that health cannot be equated with statistical normality because the concept of a norm cannot be defined objectively by scientific methods; health is instead the organism’s adaptive capacity (Unknown, unknown). Foucault extended this line by tracing how the normal/pathological distinction became entrenched in the epistemological framework of the modern clinic (Unknown, unknown). Havi Carel developed a phenomenological account of health emphasizing lived bodily experience over statistical normality, arguing this accommodates cases of chronic illness where a person may be biologically ill yet functionally healthy (Unknown, unknown).
Hybrid positions have emerged. Jerome Wakefield’s “harmful dysfunction” theory holds that a condition counts as a disorder only when it both causes harm and results from an internal mechanism failing to perform its evolutionarily natural function (Unknown, unknown). Thomas Szasz famously argued from the other direction that “mental diseases” are a myth because they lack the tissue damage that defines physical disease (Unknown, unknown).
Clinical Reasoning and the Misdescription of Medicine
A second major area concerns the epistemological character of clinical practice. Montgomery argued that the conventional “science and art” description of medicine is not so much wrong as ill-defined and shallow — medicine is poorly described by those who nevertheless practice it quite well (Montgomery, 2006). The “art” of medicine serves as a “junk category” for what cannot be assimilated to the dominant model of professional knowledge (Montgomery, 2006).
Montgomery proposed that medicine’s essential virtue is clinical judgment (phronesis) — the practical reasoning that enables physicians to fit their knowledge and experience to the circumstances of each patient (Montgomery, 2006). Aristotle described phronesis as an interpretive, making-sense-of-things way of knowing that takes account of context, unpredicted variables, and the process of change over time (Montgomery, 2006). When physicians who conduct research turn to clinical duties, they are no longer scientists but clinicians; medicine is the substantive, “scientific” is merely its modifier (Montgomery, 2006).
Evidence-Based Medicine and Its Critics
Evidence-based medicine (EBM), launched in the early 1990s at McMaster University, elevated the randomized controlled trial as the “gold standard” of evidence and created hierarchies ranking systematic research above clinical judgment, explicitly de-emphasizing clinical experience and pathophysiologic rationale (Unknown, unknown). This program raised philosophical questions about the nature of medical evidence, the relationship between population statistics and individual patients, and the limits of experimental method in clinical practice.
John Worrall argued that RCTs are powerful tools for controlling selection bias but nothing more; the claims that randomization uniquely licenses statistical inference and controls all confounders have been shown to be logically incorrect (Unknown, unknown). The extrapolator’s circle — the problem that we can only justify using an animal model if it is similar to the target in relevant respects, but we study the model precisely because we cannot study the target directly — has no general resolution (Unknown, unknown).
Causation and Explanation
Contemporary Western medicine operates through mechanistic causal hypotheses rather than unified general theories; explanatory pluralism is proposed as the appropriate philosophical stance because both mechanistic and non-mechanistic causal explanations are legitimate depending on context and practical interventional interest (Unknown, unknown). George Engel’s biopsychosocial model challenged biomedical reductionism by arguing that clinicians must account for physical, psychological, and social factors together; it has been implicitly adopted in much medical practice and teaching, though less so in biomedical research (Unknown, unknown).
The Ends of Medicine
Pellegrino and Thomasma argued that a philosophy of medicine is essential to any ethics of medicine because it defines the ends toward which the virtues are directed (Pellegrino, 1993). The ends of medicine, they maintained, are the restoration or improvement of health and, more proximately, healing — curing illness and disease or caring for the patient living with residual suffering (Pellegrino, 1993). They derived the four principles not from external philosophical systems but from internal obligations arising from the physician-patient relationship itself (Pellegrino, 1993).
Their systematic argument rests on seven theses worked out across the volume: that virtue is an irreducible element in medical ethics; that virtue ethics must be reformulated to incorporate the contributions of analytical “quandary” ethics; that the virtues of the good physician are a fusion of general and special virtue; that medical virtues are derivable from the nature of medicine as a human activity; that this derivation allows escape from the difficulties of free-standing virtue ethics; that some link must be established between principle-based, duty-based, and virtue-based ethics; and that moral philosophy must be connected to moral psychology (Pellegrino, 1993).
This teleological approach distinguishes their philosophy of medicine from the principlist approach of Beauchamp and Childress, whose four-principle framework lacks grounding in the phenomena of the physician-patient relationship (Pellegrino, 1993). The distinction matters: whether medical ethics is applied from outside or derived from within determines whether its authority rests on philosophical consensus or on the nature of medical activity itself.
Methodological Debates
Pellegrino identified a growing methodological imbalance in bioethics between “disciplines of particularity” (literature, history, behavioral sciences) and philosophical ethics, reflecting a trend from objectivity to subjectivity in ethical analysis (Carson_Burns_eds, 1997). He identified three categories of challenge facing philosophical ethics: external challenges from humanistic disciplines that emphasize particularity and experiential richness; internal challenges arising from within philosophy itself, particularly hermeneutics, postmodernism, and antifoundationalism; and challenges from within bioethics proper, including the resurgence of virtue ethics, casuistry, and feminist ethics (Carson_Burns_eds, 1997). Wartofsky advanced a constructivist historical epistemology, arguing that knowledge is constituent of and ingredient in our practices and therefore as various as those practices (Carson_Burns_eds, 1997).
Pellegrino proposed five models for how disciplines should relate in bioethics: the traditional model (ethics as a branch of philosophy), the antiphilosophical model, the process or procedural model, the eclectic-syncretic model, and the ecumenical model (Carson_Burns_eds, 1997). He argued for the ecumenical model, in which philosophy is one discipline among others, each with its own identity and specific tasks intact, but philosophy retains its foundational role for analytical and normative ethics while remaining in genuine dialogue with the disciplines of the particular (Carson_Burns_eds, 1997) (Carson_Burns_eds, 1997).
The Carson-Burns volume organizing the field’s first twenty-year retrospective reflected the editors’ view that philosophy of medicine must be understood across three dimensions: theory, clinical practice, and public policy (Carson_Burns_eds, 1997).
Diagnosis as a Philosophical Problem
Diagnosis, the process by which a clinician determines what is wrong with a patient, is a philosophically underexamined activity despite occupying the center of clinical practice. The SEP entry notes that diagnosis involves mapping symptoms and signs onto disease categories under conditions of high uncertainty, and that the rules of reasoning underlying this process remain largely unarticulated (Unknown, unknown). There is relative consensus among medical professionals and those working in medical informatics that clinical diagnosis almost certainly relies on some form of fuzzy logic rather than strict algorithmic application of rules, and that it contains both computable and irreducibly tacit dimensions rooted in pattern recognition (Unknown, unknown). This analysis converges with Montgomery’s account of phronesis as the practical virtue specific to clinical judgment, and with the observation that medicine is a “science of particulars” whose population-level evidence must always be fitted to individual cases.
See Also
- Medical Epistemology
- Epistemology
- Edmund Pellegrino
- Georges Canguilhem
- Michel Foucault
- Clinical Judgment
- Evidence-Based Medicine
- Diagnosis
- Health
- Disease
Sources
- SEP (Stanford Encyclopedia of Philosophy). “Philosophy of Medicine.” [sep-philosophy-medicine] — Lead authority
- Pellegrino, E. D. & Thomasma, D. C. (1993). The Virtues in Medical Practice. Oxford University Press. [pellegrino-thomasma-virtues-1993]
- Carson, R. A. & Burns, C. R., eds. (1997). Philosophy of Medicine and Bioethics: A Twenty-Year Retrospective. Kluwer. [carson-burns-philosophy-medicine-bioethics-1997]
- Montgomery, K. (2006). How Doctors Think. Oxford University Press. [montgomery-how-doctors-think-2006]