❤️‍🩹Intro to Public Health Unit 5 – Social & Behavioral Health Determinants

Key Concepts and Definitions

• Social determinants of health encompass the conditions in which people are born, grow, live, work and age
• Health equity is the absence of unfair and avoidable or remediable differences in health among population groups defined socially, economically, demographically or geographically
• Health disparities are preventable differences in the burden of disease, injury, violence, or opportunities to achieve optimal health experienced by socially disadvantaged populations
• Behavioral risk factors are habits or behaviors that increase an individual's likelihood of developing a disease or injury (smoking, poor diet, lack of physical activity)
• Social epidemiology is the study of the distribution and determinants of health and disease in human populations, with a focus on the role of social factors
  • Examines how socioeconomic status, race/ethnicity, gender, and other social factors influence health outcomes
• Health literacy is the degree to which individuals have the capacity to obtain, process, and understand basic health information and services needed to make appropriate health decisions
• Social capital refers to the networks of relationships among people who live and work in a particular society, enabling that society to function effectively

Historical Context

• In the 19th century, public health focused on sanitation and controlling infectious diseases through measures like quarantine and vaccination
• The 20th century saw a shift towards addressing chronic diseases and recognizing the role of lifestyle factors (diet, exercise, smoking)
• The Alma-Ata Declaration of 1978 emphasized the importance of primary healthcare and identified social, economic, and political determinants of health
• The Ottawa Charter for Health Promotion (1986) highlighted the importance of healthy public policy and creating supportive environments for health
• The WHO Commission on Social Determinants of Health (2005-2008) drew global attention to the impact of social factors on health and the need for action across sectors
  • Called for closing the health gap between socioeconomic groups within a generation
• The Rio Political Declaration on Social Determinants of Health (2011) reaffirmed global commitment to addressing social determinants and achieving health equity

Major Social Determinants of Health

• Socioeconomic status (income, education, occupation) is a key determinant of health, with lower SES associated with poorer health outcomes
  • Influences access to resources, exposure to stressors, and health behaviors
• Race/ethnicity is associated with health disparities, often due to systemic racism and discrimination
  • Racial/ethnic minorities often experience worse health outcomes compared to majority populations
• Gender influences health through biological differences, social roles and expectations, and differential access to resources and power
• Social support and social networks can buffer the impact of stress and promote healthy behaviors
• Early childhood experiences and development lay the foundation for lifelong health
  • Adverse childhood experiences (ACEs) are associated with increased risk of chronic diseases and mental health problems in adulthood
• Neighborhood and built environment factors (housing quality, access to healthy food, green spaces) influence health behaviors and outcomes
• Access to quality healthcare services is essential for preventing and managing health conditions

Behavioral Factors Influencing Health

• Tobacco use is a leading cause of preventable death and disease (lung cancer, heart disease, stroke)
• Poor diet and lack of physical activity contribute to obesity, diabetes, and other chronic conditions
• Excessive alcohol consumption can lead to liver disease, cancer, and injuries
• Sexual behaviors (unprotected sex, multiple partners) increase the risk of sexually transmitted infections and unintended pregnancies
• Sleep habits (insufficient sleep, poor sleep quality) are associated with obesity, diabetes, and cardiovascular disease
• Stress management and coping strategies influence mental and physical health
  • Chronic stress can lead to inflammation, weakened immune function, and increased risk of chronic diseases
• Adherence to medical treatments and preventive measures (vaccination, screening) is important for managing and preventing health conditions

Health Disparities and Inequities

• Health disparities are often rooted in social, economic, and environmental disadvantages
  • Poverty, discrimination, and lack of access to resources contribute to health inequities
• Racial/ethnic minorities often experience higher rates of chronic diseases (diabetes, hypertension), infant mortality, and shorter life expectancy compared to white populations
• Rural populations may face barriers to accessing healthcare services and have higher rates of certain health problems (obesity, tobacco use)
• Sexual and gender minorities (LGBTQ+ individuals) experience disparities in mental health, substance use, and access to culturally competent care
• Individuals with disabilities may face barriers to accessing preventive services and have higher rates of chronic conditions
• Health literacy disparities can lead to poorer health outcomes and less effective use of healthcare services
  • Limited English proficiency can be a barrier to accessing and understanding health information

Theoretical Models and Frameworks

• The social-ecological model emphasizes the interplay between individual, interpersonal, community, and societal factors in shaping health behaviors and outcomes
• The life course perspective recognizes the cumulative impact of social, economic, and environmental factors across the lifespan
  • Critical periods (early childhood, adolescence) can have lasting effects on health
• The fundamental cause theory posits that social conditions are the root causes of health inequities, as they shape access to resources and exposure to risk factors
• The health belief model focuses on individual perceptions and beliefs (perceived susceptibility, severity, benefits, barriers) as determinants of health behaviors
• The theory of planned behavior emphasizes the role of attitudes, subjective norms, and perceived behavioral control in shaping intentions and behaviors
• Community-based participatory research (CBPR) involves collaboration between researchers and community members to address health issues and promote health equity
  • Emphasizes community engagement, shared decision-making, and action-oriented research

Research Methods and Data Analysis

• Observational studies (cohort, case-control, cross-sectional) are commonly used to investigate associations between social factors and health outcomes
  • Cohort studies follow a group of individuals over time to assess the incidence of health outcomes
  • Case-control studies compare individuals with a specific outcome (cases) to those without the outcome (controls) to identify potential risk factors
• Randomized controlled trials (RCTs) are used to evaluate the effectiveness of interventions in reducing health disparities
• Mixed-methods approaches combine quantitative and qualitative data to provide a more comprehensive understanding of social determinants and health outcomes
• Geographic information systems (GIS) are used to map and analyze the spatial distribution of health outcomes and social determinants
• Health impact assessments (HIAs) are used to evaluate the potential health consequences of policies, programs, and projects
• Statistical methods (regression analysis, multilevel modeling) are used to examine the relationships between social factors and health outcomes while controlling for potential confounders

Interventions and Policy Approaches

• Health in All Policies (HiAP) is an approach that systematically considers the health implications of decisions across sectors (education, housing, transportation)
• Place-based interventions target specific geographic areas (neighborhoods, communities) to address social determinants and improve health outcomes
  • Examples include community development initiatives, built environment interventions, and school-based programs
• Policy interventions aim to create healthier environments and reduce health disparities through legislation, regulations, and resource allocation
  • Examples include tobacco control policies, nutrition standards for school meals, and affordable housing initiatives
• Healthcare system interventions focus on improving access to and quality of care for underserved populations
  • Examples include expanding insurance coverage, implementing cultural competency training for providers, and establishing community health centers
• Community-based interventions engage community members in the planning, implementation, and evaluation of health promotion programs
  • Examples include peer support programs, community health worker initiatives, and faith-based interventions

Case Studies and Real-World Applications

• The Adverse Childhood Experiences (ACE) Study demonstrated the long-term health impacts of childhood trauma and has informed interventions to prevent and mitigate the effects of ACEs
• The Whitehall Studies of British civil servants revealed the social gradient in health, with lower occupational status associated with higher rates of chronic diseases and mortality
• The Moving to Opportunity experiment provided low-income families with vouchers to move to higher-income neighborhoods, resulting in improved mental health and well-being for adults and children
• The Healthy Food Financing Initiative (HFFI) has supported the development of grocery stores and other healthy food retailers in underserved communities, increasing access to nutritious foods
• The Community Asthma Initiative in Boston has reduced asthma-related hospitalizations and emergency department visits among children through home visits, education, and environmental assessments
• The Nurse-Family Partnership program provides home visits by nurses to low-income, first-time mothers, improving maternal and child health outcomes

Future Directions and Challenges

• Addressing the root causes of health inequities will require sustained, multi-sectoral efforts to improve social, economic, and environmental conditions
• Climate change poses significant threats to health, particularly for vulnerable populations, and will require adaptation and mitigation strategies
• The COVID-19 pandemic has highlighted and exacerbated existing health disparities, underscoring the need for equitable public health responses and long-term investments in social determinants
• Advances in technology and data science offer opportunities for better understanding and addressing social determinants, but also raise concerns about privacy and potential misuse
• Implementing evidence-based interventions and policies at scale will require political will, resources, and community engagement
• Evaluating the long-term impact of interventions on health equity will require robust monitoring and evaluation systems and a commitment to continuous improvement
• Building a diverse and culturally competent public health workforce is essential for effectively addressing social determinants and promoting health equity