This project explores the relationship between structural factors and reproductive health among youth in Monterey County, CA and identify factors that influence these relationships that could be the focus of future public health intervention. The primary focus is to examine different sources of community violence exposure (e.g., gang involvement, having a partner in a gang, family members in gangs, witnessing neighborhood violence) and their effects on reproductive health behaviors and outcomes in youth. These questions are being evaluated in a prospective cohort study of male and female youth aged 15-21 followed for two years, completing study visits every six months. The quantitative study will be complemented by qualitative research activities in the formative research period and at the conclusion of the study.