Foreign- and U.S.-born Hispanic health deteriorate with increasing exposure and acculturation to mainstream U.S. society. Because these associations are robust to (static) socioeconomic controls, negative acculturation has become their primary explanation. This overemphasis, however, has neglected important alternative structural explanations. Examining Hispanic mortality using the 1998–2006 U.S. National Health Interview Survey-Linked Mortality File according to nativity, immigrant adaptation measures, and health behaviors, this study presents indirect but compelling evidence that suggests negative acculturation is not the only or main explanation for this deterioration.