Public Health: Principles and Practice

Understand population health and apply public health principles to real world challenges

Why do some health problems affect entire communities, and how can public health professionals help prevent disease before it causes further harm? Public health focuses on protecting and improving the health of populations through prevention, surveillance, health promotion, research and action on the conditions that shape health.

This course introduces the principles and practices of public health, connecting foundational concepts with the challenges faced by communities and health systems. You will explore how epidemiological information, health determinants and prevention strategies can inform public health decisions.

Whether you are studying public health, working in healthcare or supporting community programmes, this course is designed to strengthen your understanding of how public health approaches can be applied in practice.

What you will learn

By the end of this course, you should be able to:

• Explain the core principles and functions of public health and their relevance to population health.

• Identify social, economic, environmental and behavioural determinants of health.

• Interpret basic epidemiological concepts and describe their use in monitoring and understanding health problems.

• Compare prevention and health promotion approaches for communicable and non-communicable diseases.

• Develop a basic public health or community health intervention plan based on a defined health need.

• Explain how ethics, equity, community participation and evaluation contribute to responsible public health practice.

What does the course cover?

1. Foundations of public health

Explore the purpose of public health, population health, disease prevention and the relationship between public health services and healthcare delivery.

2. Determinants of health

Examine how living conditions, education, income, environment, behaviour and access to services influence health outcomes. Consider why health problems cannot always be addressed through clinical services alone.

3. Introduction to epidemiology

Explore the distribution and determinants of health events in populations. Develop a foundation in epidemiological thinking and the interpretation of health information.

4. Communicable and non-communicable disease prevention

Examine prevention strategies and the role of surveillance, health education, risk reduction and community-level action in addressing health challenges.

5. Health promotion and community engagement

Explore how health promotion approaches can be adapted to the needs, resources and circumstances of different populations.

6. Public health planning and evaluation

Consider how to identify a health need, define an intervention objective, select appropriate activities and determine how progress and results could be evaluated.

7. Ethics, equity and responsible practice

Explore the importance of ethical decision-making, respect for communities, responsible use of health information and attention to inequalities in health outcomes.

Consult the actual course curriculum to confirm the modules, exercises and resources included.

Why study public health?

Public health professionals contribute to prevention, health education, disease surveillance, programme implementation, research and the improvement of health services. A strong foundation in public health can help you understand how individual health outcomes are connected to broader population-level conditions. It can also help you interpret evidence, communicate health priorities and contribute to the design of community interventions.

Who should take this course?

This course may be suitable for:

• Students studying public health or related health disciplines.

• Healthcare professionals seeking broader population-health knowledge.

• Community health workers and health promotion personnel.

• NGO and public health programme staff.

• People interested in disease prevention, epidemiology and community health.

• Early career professionals preparing for public health related responsibilities.

The course is intended to provide foundational learning. Review the curriculum and prerequisites to confirm that it matches your current level and professional goals.

How to make the most of the course

As you study, consider a real or fictional community health challenge. Identify the affected population, explore possible determinants of the problem, consider appropriate prevention activities and think about how their results could be evaluated. Where practical exercises or downloadable resources are provided, use them to consolidate your learning and develop a structured approach to public health problem-solving.

Learn with Billiard Training Academy

Billiard Training Academy provides online professional education designed to make learning accessible and practical. A certificate of completion will be issued by Udemy and recognizes completion of the course and should not be interpreted as a professional licence, a university degree or formal accreditation unless those credentials are independently established.

Begin strengthening your public health knowledge

Explore the course curriculum and available previews to see how public health principles, epidemiology, prevention and health promotion can support your professional development.