Public health refers to "the science and art of preventing disease, prolonging life and promoting health through organized efforts and informed choices of society, organizations, public and private, communities and individuals".

 

Winslow, Charles-Edward Amory. "The Untilled Fields of Public Health". 9th Jan 1920. Science 51 (1306): 23–33.

 

 

 

Public health incorporates the interdisciplinary approaches of epidemiology, biostatistics and health services.

 

Environmental health, community health, behavioral health, health economics, public policy, insurance medicine and occupational safety and health are other important subfields of public health.