Public health is broadly defined as the science and art of preventing disease, prolonging life, and promoting health through the collective efforts and awareness of individuals, communities, organizations, and society. Public health analyzes the biological threats faced by a particular population and gives solutions to improve the overall health by implementing research and relevant policies. The public can range from a set of individuals to the population of an entire country. Health, on the other hand, refers to physical, psychological and social well-being. Public health is not an individual field. It has many important subfields like behavioral health, mental health, sexual health, reproductive health, environmental health, etc. The main aim of public health is to improve the quality of life through the prevention and treatment of diseases. This is done by educating the public about health initiatives, studying health indicators, and promoting healthy behaviors. Public health requires multiple teams of public health workers and professionals who are disciplined in various fields like doctors, veterinarians, sociologists, geneticists, health inspectors, etc. Developing countries struggle without free access to basic healthcare. Importance of studying public health Public health initiatives like vaccinations, family planning, traffic safety laws, and no smoking regulations have paved the way for a marginally healthier population. However, there is still a long way to go. Child wellness, disaster relief, and access to healthcare are some of the other major public health initiatives that have led to the betterment of society. This field is constantly changing and evolving depending on the needs of communities around the world. Improving conditions and behaviors that affect overall health and enable easy access to these policies is the fundamental mission. This includes research of various health conditions and education to transform people that research into policies and practices to improve the health of their community. It helps promote a healthy environment, not only physical but also the mental health of the community. Additionally, it is a moral and ethical necessity. Public health programs help keep people healthy and promote overall wellbeing. They have contributed to a global increase in life expectancy, reduction in infant and child mortality, and the eradication and prevention of many life-threatening contagious diseases and infections. Public health initiatives have a positive impact on people every day, in every part of the world. It sheds light on various broad issues that can affect the well-being and health of the entire population, not just in the present but ones that will carry on in the future generations as well. Monitoring health indicators to identify potential or existing health issues, diagnosing and investigating health problems and hazards, educating and empowering the public about these health issues, and mobilizing communities to identify and provide solutions to health problems are some of the major activities undertaken in the public health sector. Policy development, laws and regulations that promote safety and well-being, access to healthcare services for impoverished communities, and research and development of innovative solutions are responsibilities of the government employees working in the public health sector.