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Determinants of Health

• Health outcomes for individuals and communities are determined by a combination of diverse factors. The health status of a person is largely dictated by their circumstances and the environment in which they exist.
• While access and use of health care services are commonly associated with health, they often have less impact than other variables such as:
  • Residential location (where people live)
  • Environmental conditions
  • Genetic makeup
  • Income and education levels
  • Relationships with family and friends
• The specific range of personal, social, economic, and environmental factors that influence health status are formally categorized as the determinants of health.
• These determinants are grouped into several broad categories:
  • Policymaking
  • Social factors
  • Health services
  • Individual behavior
  • Biology and genetics

Policymaking and Health

• Local, state, and federal policies have direct effects on both individual and population-wide health.
• Standard examples of health-related policymaking include:
  • Economic Interventions: Increasing taxes on tobacco sales can improve population health by lowering the total number of people using tobacco products.
  • Government Regulations: The $1966$ Highway Safety Act authorized the Federal Government to set and regulate standards for motor vehicles and highways. This led to increased safety standards for automobiles, such as the mandatory inclusion of seat belts, which significantly reduced injury and death rates from motor vehicle accidents.

Social and Physical Determinants of Health

• Social determinants represent the social factors and physical conditions of the environment where people are born, live, learn, play, work, and age. These factors collectively impact health functioning and quality-of-life outcomes.
• Examples of Social Determinants:
  • Availability of resources for daily needs, including job opportunities, educational opportunities, healthful foods, and living wages.
  • Social norms and societal attitudes, including the presence of discrimination.
  • Exposure to social disorder, crime, and violence (e.g., the presence of trash in neighborhoods).
  • Socioeconomic conditions, specifically concentrated poverty.
  • Internal social support and social interactions.
  • The quality of local schools.
  • Public safety levels.
  • Options for transportation.
  • Residential segregation.
• Examples of Physical Determinants:
  • The natural environment, including weather, climate, and plants.
  • The built environment, including transportation infrastructure and buildings.
  • Settings such as schools, worksites, and recreational areas.
  • General housing, specific homes, and neighborhoods.
  • Exposure to physical hazards and toxic substances.
  • Physical barriers, particularly those affecting individuals with disabilities.
  • Aesthetic elements, such as the presence of benches, trees, and good lighting.

Health Services as a Determinant

• The quality and the accessibility of health services are critical to overall health status. Limited or non-existent access heavily affects individual outcomes.
• When individuals lack health insurance, they are far less likely to engage in preventive care and are more prone to delaying necessary medical treatment.
• Major barriers to accessing health services include:
  • High financial costs.
  • Lack of insurance coverage.
  • Limited access to services in a language the patient understands.
• Consequences of these barriers include:
  • Unmet health needs.
  • Significant delays in receiving appropriate medical care.
  • Incidences of hospitalization that could have been prevented with earlier intervention.

Individual Behavior and Health Outcomes

• Personal choices and behaviors play a decisive role in health outcomes. Positive changes in behavior are essential for reducing chronic disease rates. Examples include:
  • Smoking cessation: Quitting smoking significantly reduces the risk of heart disease.
  • Public health interventions: Most healthcare interventions focus on modifying behaviors related to substance abuse, physical activity, and diet.
• Specific individual behavior determinants include:
  • Dietary choices.
  • Physical activity levels.
  • Consumption of alcohol, cigarettes, and other drugs.
  • Hygiene practices such as hand washing.

Biology and Genetics

• Biological and genetic factors can create health disparities between different populations.
• Specific population variables include:
  • Age: Older adults are biologically more prone to poorer health than adolescents due to the cognitive and physical effects of aging.
  • Inherited conditions: Sickle cell disease is a genetic determinant inherited when both parents carry the specific gene.
• Examples of biological and genetic determinants include:
  • Age and Sex.
  • HIV status.
  • Inherited disorders: Sickle-cell anemia, cystic fibrosis, and hemophilia.
  • Genetic markers: Carrying the $BRCA1$ or $BRCA2$ gene, which increases the risk of ovarian and breast cancer.
  • Family history of chronic conditions like heart disease.

Concepts of Human and Health Behavior

• Human Behavior: This refers to the responses of individuals or groups to internal and external stimuli. It encompasses the full array of physical actions and observable emotions associated with humans. While temperament and personality may remain consistent, behaviors change as a person moves from birth to adulthood. Conduct is driven by thoughts and feelings, revealing attitudes, values, and the individual psyche.
• Social Behavior: A subset of human behavior focusing on the influence of culture and social interaction. Other influences include rapport, authority, ethics, persuasion, coercion, and hypnosis.
• Health Behavior: Any activity undertaken by an individual—regardless of their actual health status—for the purpose of maintaining, protecting, or promoting health. This applies whether or not the behavior is objectively effective.
• Risk Behaviors: Activities associated with an increased susceptibility to specific causes of ill-health. Lifestyles are often formed by clusters of health behaviors and risk behaviors functioning together.

Lifestyle and Its Impact on Health

• Lifestyle: Defined as the opinions, interests, behaviors, and behavioral orientations of an individual or group. The concept was introduced by Austrian psychologist Alfred Adler to describe tangible factors.
  • Tangible Factors: Demographic variables and profiles.
  • Intangible Factors: Psychological aspects including personal values, outlooks, and preferences.
• Impact of Poor Lifestyle Choices: Smoking, poor diet, excessive alcohol use, lack of physical activity, and unmanaged chronic stress are primary contributors to preventable chronic diseases. These include:
  • Obesity.
  • Type $2$ diabetes mellitus.
  • Hypertension.
  • Cardiovascular diseases.
• Many patients understand the logic of a healthy lifestyle but lack the behavioral skills required to sustain good habits daily.

Essential Components of a Healthier Lifestyle

• Developing a healthy lifestyle requires a permanent commitment to psychological, behavioral, and dietary changes.
• Benefits of a healthy lifestyle include:
  • Maintaining a healthier weight.
  • Slowing the aging process and managing mental/physical changes associated with age.
  • Reducing chronic disease risk.
  • Improving mood and increasing energy levels.
• Key areas of influence:
  • Nutrition: Focusing on eating for energy and digestive health rather than just satiety.
  • Hydration: Men should consume a minimum of $3\,\text{liters}$ ($14\,\text{cups}$) of fluid daily; women should consume $2.2\,\text{liters}$ ($9\,\text{cups}$). Water is preferred over soda or juice.
  • Physical Activity: Helps maintain body composition, muscle health, bone density, and joint health with age.
  • Stress Management: Controlling the survival response to prevent long-term damage to physical and mental health.
  • Sleep: Essential for mental alertness and weight management. Adults should aim for between $7$ and $9\,\text{hours}$ of sleep per night.
  • Supplements: Use of vitamins, nutrients, herbs, and detoxification methods to support wellness.

Questions & Discussion

• Question: What are the different strategies employed in Public health?
• Question: Why is public health considered as a "continuing process"?
• Question: What are the core functions of public health programs based on the World Health Organization (WHO)?
• Question: What are aspects of lifestyle that might influence health?
  • Response: Influential aspects include nutrition habits, hydration habits, physical activity, sleep habits, and stress management.