Abstract
Application of life course theory (LCT) holds promise for advancing knowledge toward the elimination of health disparities. This article validates the usefulness of employing a life course perspective when conducting health disparities research. We provide an overview of LCT as it applies to our research program in prevention of human immunodeficiency virus (HIV) among Latino teen parents. We illustrate the goodness-of-fit of our research with the basic premises of LCT. Though early adverse life experiences impact health over the lifespan, strength-based HIV prevention programs designed for Latino teen parents that recognize the reality of their lives may alter their health trajectory.