Growth Hormone and Sex Steroid Effects on Serum Glucose, Insulin and Lipid Concentrations in Healthy Older Women and Men Short title: GH, Sex Steroids Glucose and Lipids in the Elderly

From the Endocrine (TM, SMH, MRB) and Metabolism (JDS) Sections, Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD; Geriatrische Klinik, St. Gallen, Switzerland (TM); Kronos Longevity Research Institute, Phoenix, Arizona (SMH); Department of Veterans Affairs Baltimore Veterans Affairs Medical Center Geriatrics Research, Education, and Clinical Center (JDS and MRB), and the University of Maryland School of Medicine Claude D. Pepper Older Americans Independence Center, Baltimore MD (JDS); and the Division of Endocrinology and Metabolism Johns Hopkins University School of Medicine, Baltimore, MD (MRB), and Research Service, Washington DC Veterans Affairs Medical Center, Washington, DC (MRB)