Social Determinants of Health

The social determinants of health (SDOH) framework recognizes that clinical healthcare accounts for only 10-20% of health outcomes, while social and environmental factors—income, education, housing, food access, employment conditions, social isolation, discrimination, and neighborhood safety—account for 80-90%. Michael Marmot's Whitehall Studies demonstrated a precise social gradient in health: each step down the socioeconomic hierarchy corresponds to worse health outcomes, even among employed people with healthcare access. The mechanism operates through multiple pathways: material deprivation (poor nutrition, housing, healthcare access), psychosocial stress (chronic status anxiety, lack of control, social exclusion), behavioral channels (environments that promote unhealthy defaults), and biological embedding (childhood adversity produces lasting epigenetic changes).

When to use it

When evaluating why health initiatives fail to improve outcomes. When health disparities within an organization or community need explanation. When personal health advice feels insufficient and systemic factors need consideration. When designing health programs that address root causes rather than behaviors alone.

How it can help

For knowledge workers, this model provides critical context for understanding health disparities and your own health privilege. Use it to: (1) recognize that your health is substantially shaped by your socioeconomic position, not just your personal choices, (2) evaluate organizational health programs—wellness initiatives that ignore workload, job insecurity, and power dynamics address symptoms, not causes, (3) understand why health advice that works for affluent professionals may be irrelevant or insulting in other contexts, (4) advocate for structural changes (paid leave, healthcare access, fair wages) as health interventions, (5) assess your own social determinants honestly and.