This module will introduce students to public health, a discipline which seeks to prevent disease and promote the health of populations through the organised efforts of society. Public health addresses complex health and social problems that are influenced by social, cultural, political, global, environmental, organisational and economic factors. You will debate the definitions of public health, discovering its history, core functions, theories of change, and the range of essential services that can be provided. You will explore the value of theories of change such as transdisciplinary approaches and health systems thinking on the design, delivery and evaluation of public health services. In identifying the different methods of providing public health services to individuals, families, communities and societies, you will critically reflect on the implications of public health service delivery on health inequalities. These activities will help you develop practical skills and understanding of health needs assessment, epidemiology, disaster management, and community engagement.