ABSTRACT
The built environment refers to physical and social living conditions-the human-made space in which people live, work, and recreate on a day-to-day basis [1]. The built environment is the most important determinant of health. It underlies population-level obesity for both children and adults, because contextual factors influence people to consume more calories than they burn. This chapter will provide specific evidence as to how modern physical and social environments have driven too many children to become overweight or obese.
