Health studies lecture 2 january 14 th. The process of enabling people to increase control over their health and it"s determinants, and thereby improve their health . An approach that focuses on the factors (determinants) that affect the health of groups (e. g. : communities, national populations, etc. ) analysis. Contested recent work sometimes includes individual level of. Public health: the science and art of preventing diseases, prolonging life, and promoting physical health and efficiency through organized community efforts . Population health: the health of a population as measured by health status indicators and as influence by social, economic, and physical environments, personal health practices, individual capacity and coping skills, human biology early childhood development, and health services . Old public health (3 eras): sanitary era: I. e. , establishment of safe drinking water, waste disposal, improved housing, and working conditions. Noticed cholera deaths by soho, london centered around broad. All 70 employees of a local brewery did not develop cholera.