Processes underlying Mexican-origin adolescent mothers' BMI.

Abstract

To examine potential mediating and moderating factors in the longitudinal association between contextual stressors (economic hardship, ethnic discrimination) and subsequent engagement in risky behaviors and body mass index (BMI) of Mexican-origin adolescent mothers. Participants were Mexican-origin adolescent mothers (N = 204) who were recruited from community agencies and high schools in a Southwestern metropolitan area. Contextual stressors and risky behaviors were assessed 3 and 4 years postpartum. Adolescent mothers' BMI was assessed 5-years postpartum. Path analyses assessed moderated mediation with risky behaviors as a mediator of associations between contextual stressors and BMI, and family and friend support as moderators of the mediated pathways. At low levels of family support, economic hardship at 3-years postpartum positively predicted engagement in risky behaviors at 4-years postpartum, which in turn positively predicted BMI at 5-years postpartum. At high levels of family support, all relations were not significant. At low levels of friend support, ethnic discrimination at 3-years postpartum positively predicted engagement in risky behaviors at 4-years postpartum, which in turn positively predicted BMI at 5-years postpartum. At high levels of friend support, all relations were not significant. Among adolescent mothers who receive low levels of family and friend support, engagement in risky behaviors may function as a mechanism through which contextual stressors are linked to adolescent mothers' BMI. Findings have implications for prevention efforts aimed at attenuating unhealthy weight status among Mexican-origin adolescent mothers by reducing engagement in risky behaviors and bolstering family and friend support. (PsycINFO Database Record