Preface, D. de WiedDeclining Androgens with Age: An Overview, A. VermeulenEpidemiology and Diagnosis of Osteoporosis in Men, E.S. OrwollAndrogens, Bone Metabolism, and Osteoporosis, J.M. KaufmanAndrogens in Relation to Cardiovascular Disease and Insulin Resistance in Aging Men, S.M. HaffnerSex Hormones, Aging, Ethnicity, and Insulin Sensitivity in Men: An Overview of the TELECOM Study, D. Simon, K. Nahoul, and M.-A. CharlesMuscle Mass and Fat Distribution in Relation to Androgens, C. LongcopeAndrogen and Sexual Function in Men, R.C. SchiaviFlushes in Men and Women: Circulatory and Etiological Aspects, J. GinsburgAndrogens, Cognitive Functioning, and Mood in Men, K. ChristiansenEffects of Androgens in Women, B.J. Oddens, W.E, Bergink, and H.M. VernerEffects of Androgen Supplementation in the Aging Male, J.L. TenoverRisks Associated with Long-Term Androgen Supplementation, F.H. SchroderThe Prostate and Androgens: The Risks of Supplementation, F.H. SchroderAndrogen Supplementation in the Treatment of Erectile Dysfunction Associated with Hypotestosteronemia, A. MoralesIndex.