Contemporary health is no longer defined as the simple absence of disease. A growing body of research frames it instead as a dynamic state shaped by the interplay of physical, mental, social, and even existential well-being. One recent proposal captures this shift: health is “the dynamic balance of physical, mental, social, and existential well-being in adapting to conditions of life and the environment.”1PubMed. It’s time to reconsider how we define health: Perspective from disability and chronic condition That definition reflects decades of evolution in how clinicians, researchers, and public health systems think about what it means to be healthy.
From the Biomedical Model to the Biopsychosocial One
For most of modern medicine’s history, health was understood through a biomedical lens: identify a pathogen or a broken mechanism, fix it, and the patient is healthy again. That framework works well for acute infections and surgical emergencies, but it struggles with chronic illness, pain disorders, and mental health conditions, which collectively account for the majority of the disease burden in wealthy nations. The biopsychosocial model, first articulated in the late 1970s and now mainstream in clinical training, treats biological factors as only one leg of a three-legged stool. Psychological states and social circumstances carry equal weight.2International Journal of Body, Mind and Culture. The Biopsychosocial Model in Modern Healthcare: Overcoming Barriers to Holistic Patient Care
In practice, this means a clinician treating chronic lower back pain considers not only spinal imaging but also whether the patient is sleep-deprived, socially isolated, or dealing with depression. The model isn’t just a philosophical upgrade. It changes what gets measured, what gets treated, and what “recovery” looks like.
Salutogenesis and the Focus on What Creates Health
Most medicine asks: “What makes people sick?” Salutogenesis, a concept developed by the medical sociologist Aaron Antonovsky, flips the question: “What keeps people healthy, even under stress?” The central idea is “sense of coherence,” a personal orientation built on three pillars: whether life feels comprehensible, manageable, and meaningful. Research has consistently shown that a strong sense of coherence acts as a health-promoting resource and serves as a positive mental health indicator.3PubMed Central. A sense of coherence and health. Salutogenesis in a societal context: Aland, a special case?
More recent work has extended this concept from the individual to the population level, examining how structural factors like national income distribution and social infrastructure contribute to maintaining health across entire societies.4PubMed Central. Salutogenesis for thriving nations: Sense of coherence and longevity across income strata Among older adults specifically, sense of coherence and psychological resilience have been linked to health-related quality of life through pathways that include social support, both given and received.5PubMed Central. Pathways of two-way social support, resilience, and sense of coherence in relation to health-related quality of life among community-dwelling older adults
Salutogenesis matters to the contemporary definition because it reframes health as something you can actively build, not just a default state that breaks down when disease strikes. That shift underpins a lot of modern preventive medicine and wellness programming.
The Mind-Body Connection Is Biological
The phrase “mind-body connection” can sound vague, but the mechanisms behind it are increasingly well documented. Chronic psychological stress measurably alters immune function. Research has shown that stress diminishes white blood cells’ response to viral-infected cells and cancer cells, makes vaccinations less effective, and slows wound healing.6PubMed. The mind-body connection: not just a theory anymore The same body of evidence shows that some autoimmune conditions are worsened by stress, and that talk-therapy interventions can alter immune system function.
On the other side of the equation, practices like mindfulness-based interventions appear to reduce inflammation at the molecular level. Evidence points to decreases in key inflammatory markers and changes in gene expression: genes that promote inflammation become less active, while antiviral genes become more active.7Brain, Behavior, & Immunity – Health. Psychoneuroimmunology of Mindfulness: What works, how it works, and for whom? These are not placebo effects operating on subjective feelings alone. They are measurable shifts in protein levels and gene expression patterns that connect psychological experience to immune function.
Social Determinants and the Conditions of Daily Life
Where you live, how much money you make, and whether you can get to a doctor’s office have as much influence on your health as your genes or your diet. Social determinants of health span five broad domains: economic stability, access to quality education, access to quality healthcare, the physical characteristics of your neighborhood, and social support. Structural barriers like economic inequality, limited transportation, and discrimination directly affect whether people can access care at all. Transportation barriers among low-income and elderly populations, for instance, often result in delayed treatment and worsening outcomes.8PubMed Central. Social Determinants of Health: The Impact of This Overlooked Vital Sign
Contemporary health acknowledges these forces because ignoring them produces a misleading picture. A person’s blood pressure reading or body mass index tells you something, but it tells you far less if you don’t also know whether that person can afford their medication, whether their neighborhood has sidewalks, or whether they face discrimination at the clinic. The holistic definition of health insists that those contextual factors are not background noise; they are core variables.
How Lifestyle Rewires Your Biology
One of the more striking developments in health science over the past two decades is the realization that lifestyle choices do not just influence your current state of health; they can alter how your genes are expressed. Environmental and lifestyle factors, including diet, physical activity, tobacco use, alcohol, psychological stress, and even night-shift work, modify epigenetic patterns such as DNA methylation and histone modification.9PubMed Central. Epigenetics and lifestyle These changes do not rewrite your DNA sequence, but they change which genes are turned up, turned down, or silenced entirely.
A small but provocative clinical trial demonstrated that an eight-week program involving diet changes, sleep optimization, exercise, relaxation practices, and supplemental probiotics was associated with roughly a three-year decrease in epigenetic age compared to controls.10PubMed Central. Potential reversal of epigenetic age using a diet and lifestyle intervention: a pilot randomized clinical trial That was a pilot study in healthy adult males, so it is far from settled science, but it illustrates the principle: daily habits don’t just make you feel better or worse in the moment. They leave molecular marks that accumulate over time.
Circadian Health
Your body’s internal clocks regulate virtually every physiological process on a roughly 24-hour cycle. When those rhythms are disrupted, whether by irregular sleep, poorly timed meals, or inconsistent light exposure, the metabolic consequences are serious.11PubMed Central. Circadian Rhythm and Sleep Disruption: Causes, Metabolic Consequences, and Countermeasures Some of these effects compound because circadian disruption also worsens dietary choices, creating a feedback loop. The American Heart Association now recognizes circadian health as a factor in cardiometabolic disease risk, with light exposure, food timing, exercise, and sleep schedules all identified as behaviors that can synchronize or desynchronize the body’s clocks.12PubMed. Role of Circadian Health in Cardiometabolic Health and Disease Risk: A Scientific Statement From the American Heart Association
Allostatic Load
When stress is chronic rather than episodic, the body’s adaptive systems begin to wear down. The concept of allostatic load captures this process: repeated stress responses across neuroendocrine, immune, metabolic, and cardiovascular systems accumulate into a measurable burden. Studies using composite allostatic load indices have shown that this cumulative burden predicts sickness and death better than many traditional clinical measures used in routine medical practice.13PubMed. Allostatic load biomarkers of chronic stress and impact on health and cognition Allostatic load is a useful concept for contemporary health because it captures what a single blood test cannot: the long-term biological cost of living under sustained pressure.
Your Gut as a Second Brain
Trillions of bacteria in the human gut communicate with the brain through neural, immune, and hormonal pathways. This gut-brain axis is bidirectional, meaning that the brain affects gut function and gut microbes influence brain function.14PubMed Central. The Gut Microbiome and Mental Health: What Should We Tell Our Patients? People with depression, bipolar disorder, schizophrenia, and autism spectrum disorder have been found to have significantly different gut microbiome compositions compared to healthy controls.
The communication runs through multiple channels. Gut microbes produce short-chain fatty acids and precursors to neurotransmitters, and they influence signaling along the vagus nerve.15Frontiers in Microbiomes. The gut–brain connection: microbes’ influence on mental health and psychological disorders Certain bacterial groups, particularly within the Firmicutes and Bacteroidetes phyla, have been specifically linked to anxiety and depression through these pathways.16PubMed Central. The Role of Gut Microbiota in Anxiety, Depression, and Other Mental Disorders as Well as the Protective Effects of Dietary Components Enhancing beneficial bacteria through probiotics, prebiotics, or dietary changes has shown potential to improve mood and reduce anxiety in both healthy people and patient groups.14PubMed Central. The Gut Microbiome and Mental Health: What Should We Tell Our Patients?
This area of science is still maturing, and the hype has at times outpaced the evidence. But the basic finding is clear enough to reshape what “health” means: your digestive system and your mental health are not separate compartments. They are in continuous conversation.
Health Beyond the Human Body
Contemporary health thinking increasingly looks past the individual. The One Health framework recognizes that human health, animal health, and environmental health are deeply interconnected. Zoonotic diseases, antimicrobial resistance, and food safety all sit at the intersection of these three domains.17PubMed Central. One Health: A Holistic Approach to Tackling Global Health Issues
Planetary health pushes the lens even wider, examining how the degradation of Earth’s natural systems creates health crises. Climate change is already driving direct impacts like heat-related death and injuries from extreme weather events, as well as indirect ones: food insecurity leading to malnutrition, the spread of vector-borne diseases into new regions, climate-related mental health trauma, and rising financial poverty that compounds all the other risks.18PubMed Central. Planetary health and its relevance in the modern era: A topical review The core insight of the planetary health framework is that the Earth crisis and the global health crisis are the same crisis.19Annual Review of Environment and Resources. Planetary Health: Focusing on the Intersection of Human Health and the Earth System
This is not abstract environmentalism. If your definition of health stops at the individual’s body, you miss the fact that the air quality in your city, the stability of your food supply, and the likelihood of your region experiencing a catastrophic flood are all upstream determinants of whether you get sick.
How We Measure Health Is Changing Too
If health is multidimensional, the tools for measuring it need to be as well. Wearable devices are becoming important instruments for a more personalized, preventive form of medicine, continuously tracking heart rate, sleep patterns, activity levels, and other biomarkers outside the clinic.20PubMed Central. Challenges and recommendations for wearable devices in digital health: Data quality, interoperability, health equity, fairness Continuous monitoring has the potential to catch early signs of disease before symptoms appear, shifting healthcare from reactive to preventive.21PubMed. Continuous health monitoring: An opportunity for precision health
At a deeper biological level, epigenetic clocks offer a way to estimate biological age as distinct from calendar age. Newer versions of these clocks incorporate clinical measures of how people actually function, not just how many years they have been alive, and can predict outcomes including mortality, cancer risk, and physical functioning.22PubMed Central. An epigenetic biomarker of aging for lifespan and healthspan Such biomarkers are valuable because they give a physiological snapshot that captures something traditional blood panels miss: the overall pace at which your body is aging.23PubMed Central. Molecular and phenotypic biomarkers of aging
Meanwhile, the concept of the “exposome” attempts to capture the totality of environmental exposures a person experiences across their lifetime, including diet, behavior, pollutants, and internally generated biological processes.24PubMed Central. Merging the exposome into an integrated framework for “omics” sciences The exposome is still more of a research framework than a practical clinical tool, but it reflects the same underlying shift: health is cumulative, contextual, and far too complex to be captured by a single lab result.
Health Literacy and Self-Efficacy
A holistic definition of health has to account for whether people understand and feel empowered to manage it. Health literacy, the ability to find, understand, and use health information, and self-efficacy, the confidence that you can take effective action, both independently predict how healthy people rate themselves. In one study of emergency department patients, both factors were positively associated with self-rated health even after controlling for age, education, and primary language.25PubMed Central. Beyond Access Block: Understanding the Role of Health Literacy and Self-Efficacy in Low-Acuity Emergency Department Patients Self-rated health, in turn, was the strongest predictor of whether patients would return to the emergency department.
Among patients with chronic diseases in China, self-efficacy was found to mediate roughly 15 percent of the relationship between health literacy and quality of life as measured by a standard visual analog scale.26PubMed Central. The relationship between self-efficacy, health literacy, and quality of life in patients with chronic diseases: a cross-sectional study in China The implication is straightforward: giving people health information is necessary but not sufficient. They also need to believe they can act on it. Health systems that focus exclusively on access and treatment without building patient confidence are leaving something on the table.
The Built Environment and Biophilic Design
Your physical surroundings shape your health in ways that go far beyond pollution and water quality. Biophilic design, the practice of incorporating natural elements like plants, daylight, water features, and natural materials into buildings and urban spaces, has been linked to psychological restoration, stress reduction, recovery from mental fatigue, and encouragement of physical activity.27Frontiers of Architectural Research. Biophilic design in architecture and its contributions to health, well-being, and sustainability: A critical review These are not luxury perks for high-end office spaces. In hospitals, schools, and public housing, the presence or absence of natural light, greenery, and ventilation directly affects the people who use those buildings every day.
This connects to a broader understanding that the health effects of architecture and urban planning are not limited to preventing harm (removing lead paint, ensuring structural safety) but extend to actively promoting well-being. A holistic definition of health naturally includes the spaces where people spend most of their time.
Indigenous Perspectives on Health as Wholeness
Long before Western medicine developed the biopsychosocial model, many Indigenous traditions operated from an understanding of health that integrated physical, spiritual, relational, and ecological dimensions. A scoping review of Indigenous traditional healing programs in Canada, Australia, and New Zealand found that what constitutes healing in these traditions extends well beyond traditional medicine in the Western sense. It includes relational components like family and connection to land, as well as land-based activities such as ceremonies, culturally based counseling, harvesting, education, and recreation.28EXPLORE. Exploring Indigenous Traditional Healing programs in Canada, Australia, and New Zealand: A scoping review
These practices are difficult to integrate into Western healthcare systems precisely because they resist being broken into isolable interventions. You cannot extract a ceremony from its cultural and ecological context, run it through a randomized controlled trial, and declare it “evidence-based” without fundamentally changing what it is. Yet the underlying principle, that health is inseparable from relationships, place, and meaning, is remarkably consistent with where contemporary Western health science is heading. The convergence is worth noticing, because it suggests the holistic turn in modern medicine is not an invention so much as a rediscovery of something many cultures have known for a long time.