Dr. Stefanick is a Professor of Medicine (Stanford Prevention Research Center) and of Obstetrics and Gynecology, Stanford University, Co-Director of the (new) Stanford Center for Health Research on Women and Sex Differences in Medicine (Stanford WSDM Center), Co-Leader of the Cancer Prevention and Control Program (Stanford Cancer Institute) and Women’s Heart Health (Stanford Cardiovascular Institute). Dr. Stefanick has led several major women’s health research studies, including the large Women’s Health Initiative (WHI) trials of menopausal hormones, low-fat diet, and calcium/vitamin D, and a National Cancer Institute trial of a plant-based diet in early stage breast cancer survivors, as well the Study of Osteoporotic Fractures in Men (MrOS) and a series of diet, exercise, and weight control trials in women and men which influenced national lifestyle guidelines. Dr. Stefanick has a BA in biology (University of Pennsylvania) and PhD in Physiology (Stanford University), focusing on reproductive physiology and neuroendocrinology, and exercise physiology as a secondary focus. She was also an Iris Litt Faculty Fellow at the Clayman Institute for Gender Research.