FrontMatter -- Independent Report Reviewers -- Preface -- Acknowledgments -- Contents -- Tables, Figures, and Boxes -- Executive Summary -- 1 Introduction -- 2 Testosterone and Health Outcomes -- 3 Future Research Directions -- 4 Concluding Remarks -- Appendixes -- A Data Sources and Methods -- B Randomized Placebo-Controlled Trials of Testosterone Therapy in Older Men -- C Additional Studies of Testosterone Therapy -- D Testosterone Levels in Clinical Studies -- E Acronyms -- F Biographical Sketches of Committee Members and Staff -- Index.