The DFG (Deutsche Forschungsgesellschaft)-funded Research Training Group “Hormonal Regulation of Energy Metabolism, Body Weight and Growth” addresses in an interdisciplinary, multi-institutional approach important aspects of hormone systems controlling these parameters in higher mammalian organisms, including man. Several endocrine research teams cooperate in this Ph.D./M.D. program, offering their outstanding scientific training, teaching, and research experience to provide a structured interdisciplinary research and training curriculum with the aim of awarding Ph.D. (Dr. rer. nat.), Dr. rer. medic., or M.D. degrees.