Public health is defined as the practice of demonstration and research that prevents disease, prolongs life, and promotes health. The scope of public health includes public and private organizations, communities, individuals, and society at large. Jobs in the field generally consist of multidisciplinary teams of public health professionals who intervene in order to improve health and quality of life.
There are many different areas of public health and types of careers for public health graduates. The key areas of specialization in the field include environmental health, community health, epidemiology, global health, and health policy and management.