Introduction
Conceptual frameworks form the foundation of research by identifying theories and concepts that guide inquiry. While qualitative research often develops unique conceptual frameworks for each study, an overarching conceptual framework can also guide multiple studies exploring related issues. This paper proposes a conceptual framework to explore how social and environmental factors shape individual health behaviors and outcomes over the life course. Developing a clearly defined conceptual framework is an important first step to understanding complex relationships and guiding meaningful research.
Review of Existing Literature
A growing body of literature examines social determinants of health across disciplines like public health, medicine, sociology and environmental science. Studies consistently show social and economic inequities systematically influence differences in health outcomes (Marmot et al., 2012). Limited access to resources like education, stable housing, healthcare and safe communities undermine health and exacerbate health disparities (Committee on Assuring the Health of the Public in the 21st Century, 2003). While genetics play a role, social and environmental circumstances have a profound impact on determining who becomes sick and who remains well (World Health Organization, 2020). The life course perspective also recognizes developmental and environmental experiences at critical periods throughout life influence long-term health and disease risk (Halfon & Hochstein, 2002).
Several existing conceptual models informed the creation of this proposed framework. The socio-ecological model emphasizes multiple levels of influence on behaviors from intrapersonal to policy levels (McLeroy et al., 1988). Bronfenbrenner’s ecological systems theory also examines reciprocal interactions between individuals and their environments (Bronfenbrenner, 1979). Literature on allostatic load suggests the cumulative biological burden of multiple stressors over time damages health (McEwen & Stellar, 1993). Place-based researchers increasingly recognize the impact of neighborhoods and local environments on wellbeing (Diez Roux & Mair, 2010). While existing models provide guidance, an integrated framework was needed to holistically examine dynamic interactions shaping health across the life course.
Proposed Conceptual Framework
The proposed conceptual framework (Figure 1) presents social and environmental factors as multi-level determinants of health behaviors and outcomes over five life course stages: prenatal/early childhood, childhood/adolescence, young adulthood, mid-life and older age. At the center, individual health behaviors like diet, physical activity, substance use and adherence to medical treatment serve as proximate determinants influenced by outer contextual layers.
Moving outward, the microsystem examines relationships and immediate settings like family, school/workplaces and neighborhoods that shape experiences and social support networks from a life course perspective. The mesosystem explores interactions between microsystems and how they reinforce health behaviors. For example, neighborhood safety and access to healthy foods impact diet.
The exosystem layer represents broader social and economic contexts circumscribing daily life like quality of housing, education, transportation and healthcare systems. Layered policies and societal norms comprise the macrosystem level influencing socioeconomic and environmental conditions for all inner layers. Finally, a chronosystem encapsulates how changes within individuals and their environments across the life span bi-directionally impact health over time.
This framework positions individual health as the core outcome determined through dynamic interactions between behavior and multi-level influences present across diverse life course phases in a changing context. Variations by key social strata like gender, socioeconomic status and race are also critical to understanding health inequities. Together, these constructs enable examination of pathways linking social and environmental drivers to health outcomes at both individual and population levels over the lifespan.
Discussion and Conclusion
Developing a conceptual framework is a critical first step for guiding meaningful research. By integrating theories from several disciplines, this proposed model provides a comprehensive structure for exploring relationships between determinants shaping health behaviors and outcomes across diverse populations and the life course. Examining pathways through this integrated lens can help identify leverage points for interventions addressing health inequities. Future research guided by this framework across various methodologies may add to understanding complex interactions and inform multilevel interventions and policies to promote population health and wellbeing. While refinement will emerge through application, this model offers a starting point for systematic inquiry into social and environmental influences on individuals’ health trajectories over time.
Overall, this conceptual framework aims to holistically examine dynamic relationships between individual, social, environmental and policy influences on health behaviors and outcomes throughout life. Its multi-level perspective from prenatal development to older age recognizes the interplay between people and their changing contexts over time. This comprehensive approach positions researchers, practitioners and policymakers to better address health from a prevention, promotion and equity standpoint through data-driven, evidence-based solutions targeting various levels of influence. By advancing understanding of pathways linking determinants to outcomes with perspectives across disciplines and the lifespan, this framework supports efforts to foster health and well-being for all.
Andrew Stroud