Dr. Ronnett has served as the Gestational Diabetes (GDM) Venture Leader in the Disease Interception Accelerator (DIA) at Janssen Research & Development within Johnson & Johnson. She was Professor of Neuroscience, Neurology, and Biological Chemistry at Johns Hopkins University School of Medicine, where she was also the Founding Director of the Center for Metabolism and Obesity Research (CMOR) and one of the Founding Directors of the Center for Integrated Resources in Biology at Johns Hopkins. Dr. Ronnett also served as the founding Director and Head of the Department of Brain Sciences, the first such department in Korea, at the Daegu Gyeongbuk Institute of Science and Technology (DGIST) in the Republic of Korea. She received her MD and PhD in Biochemistry from The Johns Hopkins University School of Medicine. She performed her Medical Internship on the Osler Medical Service, her Neurology Residency, and then was Chief Resident in Neurology at the Johns Hopkins Hospital. Her research has been in diverse fields, including obesity, diabetes, cancer, autism, olfaction, and stroke.