The NIH announces the availability of administrative supplements to support research highlighting the impact of sex/gender differences (or similarities) in human health, including behavioral, clinical or preclinical studies. Included are studies relevant to the pathophysiology, clinical presentation, prevention, or treatment of disease. The proposed research should address the objectives of the NIH Strategic Plan for Womens Health and Sex Differences Research (http://orwh.od.nih.gov/NIHStrategicPlan.ORWH.pdf [1]