Dr. Baumann has expertise in Type 2 diabetes in obese populations. She will work with the trainees, in collaboration with Dr. Robert Rosenfield, on clinical studies of at-risk populations. She is primarily studying various aspects of type 2 diabetes mellitus in children. She is actively involved in accruing data for the childhood arm of RL Rosenfield's study of the genotypic/pheontypic relationship in females with polycystic ovary syndrome (PCOS) and particularly will develop the normal data for the frequently sampled oral glucose tolerance test to be used to investigate these individuals. She will study children at risk for PCOS, specifically children with type 1 and type 2 diabetes mellitus. She is also interested in specifically dissecting the insulin secretory parameters in children with hyperandrogenism and hyperinsulinism with or without glucose intolerance. I have been studying onset characteristics of this subgroup in minority children with type 2 diabetes in the local population at large with an epidemiologist, Rebecca Lipton, Ph.D., attempting to develop an algorithm for diagnosis. Her ultimate goal is to develop subgroups diagnostically in order it treat their disease based upon pathogenetic abnormality. We would also like to determine the incidence and prevalence of this problem in Chicago, IL.