1: What is Public Health?
- Page ID
- 189718
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)Public health aims to promote positive health outcomes for everyone. When public health is effective, it's often invisible -- we notice illness, but seldom notice when people are NOT getting sick from a hazard that was prevented or mitigated by public health. Clean water? Food that's safe to eat? Vaccines? Safe working conditions? Public health plays a role in all of that!
As a field, public health encompasses a range of scientific disciplines, jobs, and practices, all united by a commitment to improving public health. Public health practitioners - whether they are health educators or water quality monitors, food policy advocates or infectious disease specialists - focus on the health and well-being of the community as a whole. They study how disease and injury affect populations as a whole and work to prevent them on a large scale. In fact, prevention is probably the most important word in the public health lexicon.
This chapter introduces core concepts and tools in public health. The discussion will include a more detailed explanation of public health, its history, its relationship to personal health, and the approaches used to study it.
- 1.1: What Exactly is Public Health?
- This page discusses the impact of public health on daily life, emphasizing its role in ensuring access to clean resources, safety, nutrition, and mental health support. It operates at the population level, focusing on prevention, education, and equitable healthcare policies.
- 1.2: History of Public Health
- This page outlines the evolution of public health from ancient practices to modern challenges, emphasizing the transition from addressing infectious diseases to chronic conditions and social determinants of health. Key historical events such as urban sanitation issues, John Snow's cholera investigation, and the eradication of smallpox through vaccination are highlighted.
- 1.3: Public Health vs Personal Health
- This page contrasts public and personal health, noting that public health focuses on populations, while personal health emphasizes individual choices. It outlines eight components of health, such as physical and psychological well-being, and explores various determinants of health, including behavior, genetics, and social factors. The influence of social conditions on health is highlighted, setting the groundwork for further discussion on social determinants.
- 1.4: Approaches to Protect and Promote Health
- This page emphasizes the significance of addressing social determinants of health for achieving health equity, contrasting it with health equality. It outlines the role of public health in focusing on at-risk populations and discusses shifts in health challenges and dietary patterns. Additionally, it highlights the need for collective action to tackle shared health issues, promoting overall well-being.
- 1.5: Risk Factors and Protective Factors
- This page discusses risk factors, which are traits or conditions that increase the likelihood of disease or injury before or during onset, and differentiates them from health consequences. It highlights the connection of risk factors to genetics, behaviors, social conditions, healthcare access, and the environment.
- 1.6: The Healthy People Initiative 1990-2030
- This page discusses the Healthy People Initiative, initiated in 1979, which focuses on improving public health through decadal measurable targets. The current phase, Healthy People 2030, features a vision, mission, and 355 objectives across 62 health topics, highlighting social determinants of health and health literacy. It aids local health efforts with tools for prioritizing needs and fosters equitable health outcomes while addressing health disparities within communities.
- 1.7: Social Determinants of Health
- This page explores Social Determinants of Health (SDOH), underscoring the impact of factors like economic stability, education, and healthcare access on health outcomes. It examines how health literacy and systemic barriers, such as discrimination and high costs, affect well-being. Promoting health equity through inclusive policies is emphasized as essential for addressing health disparities and fostering community wellness, making health a shared right that can enhance overall societal health.