About Public Health

According to the Association of Schools of Public Health, Public Health is the science of protecting and improving the health of communities through:
  • Education
  • Promotion of healthy lifestyles
  • Research for disease and injury prevention
Public health professionals analyze the effect on health of genetics, personal choice and the environment in order to develop programs that protect the health of your family and community. For more information visit the Association of Schools of Public Health website.
Wheel graphic shows the components of the core functions of public health, with research as the hub

Core Functions of Public Health


The following are listed on the Centers for Disease Control and Prevention website as the core functions of public health:
  • Assessment:
    • Monitor environmental and health status to identify community environmental health problems
    • Diagnose and investigate environmental health problems and health hazards in the community
  • Policy Development:
    • Inform, educate and empower people about environmental health issues
    • Mobilize community partnerships to identify and solve environmental health problems
    • Develop policies and plans that support individual and community environmental health efforts
  • Assurance:
    • Enforce laws and regulations that protect health and ensure safety
    • Link people to needed environmental health services and assure the provision of environmental health services when otherwise unavailable
    • Assure a competent environmental health workforce
    • Evaluate the effectiveness, accessibility and quality of personal and population-based environmental health services
    • Conduct research for new insights and innovative solutions to environmental health problems and issues

10 Essential Public Health Services


  • Monitor health status to identify community health problems
  • Diagnose and investigate health problems and health hazards in the community
  • Inform, educate, and empower people about health issues
  • Mobilize community partnerships to identify and solve health problems
  • Develop policies and plans that support individual and community health efforts
  • Enforce laws and regulations that protect health and ensure safety
  • Link people to needed personal health services and assure the provision of health care when otherwise unavailable
  • Assure a competent public health and personal healthcare workforce
  • Evaluate effectiveness, accessibility, and quality of personal and population-based health services
  • Research for new insights and innovative solutions to health problem