A Spatial Economic Analysis of Urban Land Use and Obesity*
构建城市空间模型，分析土地利用与肥胖的关系，解释高肥胖率与低开发密度的对应，并研究居民按收入、初始体重等属性的分类及城市设计对体重和密度的影响。
Abstract. We analyze an urban spatial model to examine the possible link between urban land use and obesity. Households maximize utility defined over housing, weight, and food subject to a fixed time budget allocated to commuting, calorie expenditure, and work. Our model explains the observed correspondence between high obesity rates and low development densities, but implies that these are determined endogenously in a spatial market equilibrium. We study the sorting of residents by attributes such as income, initial weight, and weight preferences, and examine the impacts on weight and density of urban design modifications that lower the costs of calorie expenditure.