promoting behaviors and maternal and infant outcomes in older pregnant Thai women. These women have distinct concerns, opportunities, and health risks during their prenatal period, labor, and delivery. Early identification of health promoting behaviors may offer a unique opportunity for nurses to provide effective teaching and counseling to assist pregnant women to engage in more optimal health behaviors. Older pregnant women, in particular, should be made aware of the benefits of preconception and early prenatal care and encouraged to obtain first trimester screening and early healthcare interventions as needed.