What is public health and its importance

If you've ever wondered what public health involves, you're not alone. It’s a field that often gets confused with clinical healthcare, but the two are quite different.

Public health focuses on building healthier populations through prevention, policy, and education. This article breaks down what public health means, how it helps communities across Australia, and what a career in public health actually looks like.

What does public health mean?

Public health is the practice of preventing disease, prolonging life and promoting wellbeing at a population level. Rather than focusing on individual patients, it examines health trends, risk factors and systemic solutions that benefit whole communities. Its core functions include health promotion, disease prevention, health protection and the development of health policies.

There are several disciplines within public health, including:

• Epidemiology: the study of the distribution and determinants of diseases and health events in populations, used to inform prevention and control strategies to support evidence-based decision-making in public health
• Environmental health: focuses on how environmental factors such as air, water, housing and climate impact human health and how risks can be mitigated
• Health policy: involves the development, analysis and implementation of policies that shape healthcare systems and influence population health outcomes
• First Nations Health: examines the health and wellbeing of Aboriginal and Torres Strait Islander peoples, with a focus on culturally safe, community-led approaches and addressing systemic inequities
• Health promotion: focuses on enabling individuals and communities to increase control over their health through education, behaviour change and supportive environments
• Community health: examines health issues related to specific communities to help develop interventions that are tailored to them

What is the difference between public health and healthcare?

Clinical healthcare (for example, general practice, nursing, and surgery) focuses on diagnosing and treating individuals. Public health, on the other hand, takes a step back and looks at the bigger picture. It’s concerned with why certain diseases spread, which populations are most at risk, and how systems and policies can be designed to prevent or lower the impact of health issues before they occur.

How does public health help communities in Australia?

Australia faces a number of public health challenges. Public health professionals play a critical role in identifying these issues and developing strategies to address them at a community level.

• Chronic disease burden: There are high rates of conditions such as diabetes, cardiovascular disease and obesity, particularly in disadvantaged and rural populations
• Health inequities for First Nations communities: There are persistent gaps in life expectancy, access to care and health outcomes linked to social determinants and historical disadvantage
• Access to healthcare in rural and remote areas: There are workforce shortages, geographic isolation and reduced access to specialist services contribute to poorer health outcomes

Examples of public health initiatives and programs

Many Australians will be familiar with our most successful public health campaigns and initiatives. Three notable examples in recent times are:

• The Closing the Gap initiative: A national strategy aimed at reducing health and life expectancy disparities between First Nations and non-Indigenous Australians through targeted policies and community-led programs
• The Tackling Indigenous Smoking (TIS) program: A culturally tailored initiative focused on reducing smoking rates among Aboriginal and Torres Strait Islander peoples through education and community engagement
• The Rural Health Outreach Fund (RHOF): Supporting healthcare professionals in delivering essential services in rural and remote communities, improving access to care for underserved populations

Types of public health careers

If you care about community wellbeing and social impact but don’t see yourself in a clinical role, a public health career would be an excellent fit. It’s a dynamic industry suited to those who feel called to make a difference, are interested in solving community health issues, and enjoy research and policy work.

Right now, the field is evolving rapidly with growing demand for expertise in digital health, data analytics, artificial intelligence and implementation science. There’s also an increased focus on pandemic preparedness and climate-related health risks.

Public health professionals work across a range of organisations, including the Department of Health at local, state and national levels, NGOs, research institutions and the university sector.

Common roles include:

• Health Promotion Officer
• Health Policy Advisor
• Community Development Officer
• Research and Development Officer
• Epidemiologist
• Public Health Analyst
• Program Manager (Health Programs)
• Monitoring and Evaluation Specialist
• Public Health Nurse/Physician

If you’re wondering what qualifications are needed to work in public health, most roles require at least a bachelor’s degree in Public Health or a related field, with many professional or leadership roles preferring a Master of Public Health (MPH). Practical experience through industry research or internships is also highly valued by employers.

Public Health courses develop health professionals into innovative leaders. Guided by industry experts, you’ll learn how to design effective intervention strategies, identify health risk factors and evaluate the effectiveness of health policies. These are skills that public health employers actively look for, and our graduates are already putting them to work across government, NGOs and community organisations:

• Aisha landed a role as a Health Promotion Officer at a local council after completing a Master of Public Health. She designs and delivers community-based programs that promote physical activity and healthy eating, helping to reduce the risk of chronic disease in diverse populations.
• Daniel secured a job as a Policy Support Officer at a state Department of Health after completing a Master of Public Health. He contributes to the development and evaluation of mental health policies, supporting system-level improvements that benefit vulnerable communities.

Whether you’re wondering if public health is a good career in Australia or what you can do with a Public Health degree, the short answer is: plenty. The field is growing, and the demand for qualified professionals continues to rise across government, private and not-for-profit sectors.