Public Health Sciences

Public health is "the science and art of preventing disease, prolonging life and promoting human health through organized efforts and informed choices of society, organizations, public and private, communities and individuals." Analyzing the health of a population and the threats is the basis for public health. The "public" in question can be as small as a handful of people, an entire village or it can be as large as several continents, in the case of a pandemic. "Health" takes into account physical, mental and social well-being. It is not merely the absence of disease or infirmity, according to the World Health Organization. Public health is interdisciplinary. For example, epidemiology, biostatistics and health services are all relevant. Environmental health, community health, behavioral health, health economics, public policy, mental health and occupational safety are other important subfields.

Public health aims to improve the quality of life through prevention and treatment of disease, including mental health. This is done through the surveillance of cases and health indicators, and through the promotion of healthy behaviors. Common public health initiatives include promoting handwashing and breastfeeding, delivery of vaccinations, suicide prevention and distribution of condoms to control the spread of sexually transmitted diseases.

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Wikipedia