Length of Residency in the United States and Obesity Across Race/Ethnicity.

We examined whether the association between length of US residency (LUSR) and obesity is dependent on race/ethnicity and sex, among foreign-born individuals. Adult's body mass index (N = 151,756) were analyzed using the 2013-2017 National Health Interview Surveys. Among foreign-born adults living in the US < 5 years, non-Hispanic Blacks and Hispanics had the highest obesity prevalence compared to non-Hispanic Whites and Asians. Blacks and Hispanics also had the highest incremental percentage point increase in obesity (13%) between < 5 years and ≥ 15 years LUSR. Foreign-born black men had the lowest obesity prevalence among men in the US < 5 years (5.3%) but had the sharpest percentage point increase in obesity among men in the US ≥ 15 years (21%). Foreign-born black women in the US < 5 years had a 30.1% obesity prevalence. Obesity prevention interventions should account for differences in LSUR among foreign-born individuals.