Contemporary social epidemiology, however, is not without its theories. The three main theories explicitly invoked by practising social epidemiologists are: (1) psychosocial, (2) social production of disease and/or political economy of health, and (3) ecosocial theory and related multi-level frameworks.mbodiment, a concept referring to how we literally incorporate, biologically, the material and social world in which we live, from conception to death; a corollary is that no aspect of our biology can be understood absent knowledge of history and individual and societal ways of living.
Springdale is a borough in Allegheny County, Pennsylvania, 18 miles northeast of Pittsburgh along the Allegheny River. The population was 3,405 at the 2010 census.
Springdale is located at an elevation of 3,900 feet (1,200 m). According to the United States Census Bureau, the town has a total area of 4.6 square miles (12.0 kmÂ²), all of it land. As of the census of 2010, there were 529 people, 252 households, and 137 families residing in the town. The population density was 115 people per square mile (44.1/kmÂ²).