Professor Rodriguez's research program uses a biopsychosocial approach to study health and health behaviors. She conducts research at the intersection of social phenomena (such as weight stigma), biomarkers (such as the stress hormone cortisol), and psychological factors (such as perceived stress and body image). Her work follows two core arcs investigating (1) biopsychosocial predictors and consequences of eating, not eating (i.e. dieting), and obesity; and (2) weight stigma and its consequences for physical and mental health, which she is currently extending into the novel context of pregnancy and postpartum health.