Grant Number:	5R01CA281042-03 Interpret this number
Primary Investigator:	Shier, Victoria
Organization:	University Of Southern California
Project Title:	Redeveloping Low-Income Communities of Color: Impacts on Residents' Obesity and Related Health Behaviors
Fiscal Year:	2025

Obesity is a major public health concern and is linked to increased risk for many other health outcomes including cancer, hypertension, type 2 diabetes, stroke, asthma, and early mortality. Housing quality and the built environment are believed to play an important role in shaping obesity and related health outcomes. However, it is unclear to what extent obesity can be reduced by improving housing and built environments, for example, by improving walkability, green space, healthy food access, safety, and air quality. To address this research gap, we propose to study a time-sensitive natural experiment that will ultimately significantly improve opportunities for health by altering the built environment and housing quality. The Housing Authority of the City of Los Angeles is planning to redevelop the Rancho San Pedro (hereafter, Rancho) community, an obsolete 478-unit public housing project located next to the Port of Los Angeles. The redevelopment will build new housing for existing residents, add additional housing units and homeownership units, provide several opportunities for healthier lifestyles via parks, green spaces, jogging trails, community gardens, street lighting, and retail space, and create housing and built environment enhancements that will reduce air pollution exposure from the Port. Current Rancho residents will continue to live in existing housing during the redevelopment, and as a result, residents will experience construction-related disruption (loss of greenspace and walkability, noise and air pollution). Our goal is to study the effects of these short-term disruptions on residents’ BMI and related health outcomes (e.g., cardiovascular, asthma exacerbation). We will do this by following a cohort of residents of Rancho and a control public housing site. In Aim 1, we will examine the short-term impact of the Rancho public housing redevelopment on residents’ BMI and related health outcomes. In Aim 2, we will unpack the potential mechanisms for the observed change in health outcomes to investigate both why and how observed changes occur. Finally, in Aim 3, we will explore moderating effects by time activity patterns and health status to understand for whom and under what circumstances changes were observed.





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