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BACKGROUND: Federal housing assistance is an important policy tool to ensure housing security for low-income households. Less is known about its impact on residential environmental exposures, particularly lead. OBJECTIVES: We conducted a quasi-experimental study to investigate the association between federal housing assistance and blood lead levels (BLLs) in a nationally representative US sample age 6 y and older eligible for housing assistance. METHODS: We used the 1999-2018 National Health and Nutrition Examination Survey (NHANES) linked with US Department of Housing and Urban Development (HUD) administrative records to assess BLLs of NHANES participants with concurrent HUD housing assistance (i.e., current recipients, n = 3,071) and those receiving assistance within 2 y after the survey (i.e., pseudo-waitlist recipients, n = 1,235). We estimated BLL least squares geometric means (LSGMs), odds ratio (OR) for BLL [greater than or equal to]3.5 [micro]g/dL, and percent differences in LSGMs by HUD housing assistance status adjusting for age, sex, family income-to-poverty ratio, education, country of birth, race/ethnicity, region, and survey year. We also examined effect modification using interaction terms and stratified analyses by program type [i.e., public housing, multifamily, housing choice vouchers (HCV)], and race/ethnicity. RESULTS: Current HUD recipients had a significantly lower LSGM [1.07 [micro]g/dL; 95% confidence interval (CI): 1.02, 1.12] than pseudo-waitlist recipients (1.21 [micro]g/dL; 95% CI: 1.14, 1.28), with an adjusted OR of 0.60 (95% CI: 0.42, 0.87) for BLL [greater than or equal to]3.5 [micro]g/dL. Some effect modification were observed: The protective association of HUD assistance on BLL was strongest among public housing (-19.5% LSGM; 95% CI: -27.5%, -10.7%), multifamily (-12.5% LSGM; 95% CI: -20.7%, -3.5%), and non-Hispanic White (-20.6% LSGM; 95% CI: -29.8%, -10.3%) recipients. It was weaker to null among HCV (-5.7% LSGM; 95% CI: -12.7, 1.7%), non-Hispanic Black (-1.6% LSGM; 95% CI: -8.1%, 5.4%), and Mexican American (-12.5% LSGM; 95% CI: -31.9%, 12.5%) recipients. DISCUSSION: Our research underscores the importance of social-structural determinants like federal housing assistance in providing affordable, stable, and healthy housing to very low-income households. More attention is needed to ensure housing quality and racial equity across HUD's three major housing assistance programs. https://doi.org/10.1289/EHP12645, Introduction Lead is a ubiquitous environmental toxin with deleterious effects on the nervous, hematopoietic, endocrine, renal, and reproductive systems. Higher blood lead levels (BLLs) in adults have been consistently associated [...]

Housing policy in the United States has long been characterized by unequal investment in homeownership and low-income rental assistance, with implications for racial (and ethnic) inequality in access to stable housing. In this study, I examine socioeconomic status and neighborhood characteristics of non-Hispanic White and non-Hispanic Black adults with children receiving HUD rental assistance using a nationally representative linked survey-administrative dataset. Results show that Black and White adults who receive rental assistance tend to have similar (low) incomes, yet Black adults experience significantly higher levels of neighborhood disadvantage than White adults. Furthermore, living in poverty is a substantially stronger predictor of receiving HUD rental assistance for White than Black adults. The results support the notion that rental assistance programs are a last resort for White households, many of whom may benefit from historical federal government support for homeownership. Rental assistance serves as an important safety net for Black families but fails to provide significant improvement in the neighborhood environment. The results contribute to a comprehensive understanding of racial inequality in the impacts of U.S. rental housing policy and the historical legacy of racial exclusion in U.S. homeownership programs. [ABSTRACT FROM AUTHOR]