Social determinants of health are the circumstances in which people are born, grow, learn, work, live, and age, together with the wider institutions and systems shaping those circumstances. They include income, housing, employment, schooling, social relationships, and access to services. The concept connects individual health with population-level patterns of illness, functioning, and quality of life, extending attention beyond medical treatment and personal behavior to the conditions that influence both. It is central to public health approaches concerned with differences in health between social groups. (odphp.health.gov)
Concept and Scope
Social determinants include conditions that support health as well as those associated with disadvantage. Adequate income, safe neighborhoods, and supportive relationships are relevant alongside deprivation and hazardous environments. They are not simply a catalogue of individual deficiencies: they also encompass how resources and opportunities are distributed through social and economic institutions. (odphp.health.gov)
A related concept is health equity, concerned with the absence of unfair, avoidable, or remediable differences in health between population groups. WHO describes a social gradient: health generally improves as socioeconomic position rises. This pattern extends beyond a division between people living in poverty and everyone else, although its magnitude differs across settings and outcomes. Social determinants help explain why differences in life expectancy and healthy years occur within countries as well as between them. (who.int)
Terminology distinguishes population conditions from individual circumstances. Social risk factors are specific adverse conditions associated with poor health, such as housing instability. Health-related social needs incorporate an individual’s own priorities and preferences for assistance. Identifying a person’s transportation problem, for example, is different from examining the transportation system that produces access barriers across a community. (nam.edu)
Major Domains
The United States Healthy People 2030 framework organizes social determinants into five domains. These provide a practical classification rather than five independent causes. (odphp.health.gov)
- Economic stability: Employment, income, poverty, food insecurity, and housing instability affect the resources available for daily life. Food insecurity concerns constrained access to adequate food, connecting economic circumstances with nutrition. (odphp.health.gov)
- Education access and quality: Education, early childhood learning, school completion, and literacy are included because learning environments and educational opportunities are associated with health and well-being. (odphp.health.gov)
- Health care access and quality: This domain includes access to health services, primary care, and health literacy. The latter concerns both people’s ability to use health information and organizations’ capacity to make information and services understandable and usable. (odphp.health.gov)
- Neighborhood and built environment: Housing quality, environmental conditions, neighborhood safety, and access to foods supporting healthy diets fall within this domain. Transportation and local infrastructure also shape opportunities to reach services and participate in daily activities. (odphp.health.gov)
- Social and community context: Social cohesion, civic participation, and incarceration are among the topics examined. Relationships and community conditions can provide support or expose people to isolation, discrimination, and violence. (odphp.health.gov)
Structural Factors and Pathways
The World Health Organization distinguishes structural determinants from intermediary determinants. Structural determinants include the socioeconomic and political context and the processes that establish social position. Governance, economic policies, and social institutions influence the distribution of income, education, occupational status, and power. Intermediary determinants include material circumstances, psychosocial conditions, behavioral and biological factors, and the health system itself. (iris.who.int)
These pathways connect social organization with everyday exposure and vulnerability. Material circumstances include housing, neighborhood quality, purchasing capacity, and working environments. Psychosocial circumstances include stressful living conditions and social support. Behaviors such as dietary patterns and physical activity are therefore considered within the circumstances in which they occur, rather than solely as isolated choices. Illness can also affect social position through its consequences for employment and financial security. (iris.who.int)
Wider environmental changes interact with these conditions. Climate change can damage livelihoods and essential resources unevenly, while displacement can disrupt services and family support networks. These interactions connect environmental exposure with economic security and mental health. (who.int)
Development of the Framework
WHO established its Commission on Social Determinants of Health in March 2005. Its final report, Closing the Gap in a Generation, was published in August 2008. The commission organized its recommendations around improving daily living conditions, addressing unequal distributions of power and resources, and measuring inequalities and the effects of action. Its work brought together country experience, civil-society contributions, and thematic knowledge networks. (who.int)
WHO’s 2010 conceptual framework subsequently clarified the distinction between structural and intermediary determinants and their relationships with health inequalities. (who.int)
Measurement and Institutional Responses
Monitoring examines both health outcomes and the conditions underlying them. Indicators can include unemployment, earnings, occupational injuries, poverty, food insecurity, and access to services. Disaggregation by characteristics such as age, sex, disability, and place of residence makes differences between population groups visible that national averages may conceal. WHO’s operational monitoring framework, published in 2024, provides an indicator menu and a process for connecting evidence with policy across sectors. (cdn.who.int)
Institutional responses consequently extend beyond health care. Healthy People 2030 incorporates objectives involving housing, education, and transportation, while WHO’s framework addresses multisectoral public policies and programmes. Clinical identification of individual social needs and population-level changes to underlying conditions operate at different scales; evidence about the outcomes of health-care-based social interventions remains developing. (odphp.health.gov)