The Weight of Being Unauthorized? Legal Status Variation in the Association between US Exposure and Obesity among Hispanic Immigrants in Los Angeles.

We examine whether exposure to the US, experienced under certain conditions of disadvantage, namely immigrant legal status, is associated with body weight. Using the pooled, cross-sectional 2001 and 2008 Los Angeles Family and Neighborhood Survey (LAFANS) (n = 2063), we examine whether body mass index (BMI) and obesity vary by Hispanic immigrants' legal status and time exposure to the US. The increased risk of obesity associated with greater US exposure is more pronounced among unauthorized Hispanic immigrants compared to their legally resident coethnic peers, after adjusting for age and age-at-arrival. It is not only residing in the US that is associated with increases in body weight, but residing in the US as an unauthorized immigrant. Improved data and methods are needed to facilitate research of greater policy significance and a refined understanding of how health integration processes vary by legal status.