FrontMatter -- Independent Report Reviewers -- Preface -- Acknowledgments -- Contents -- Summary -- 1 Introduction -- 2 Sleep Physiology -- 3 Extent and Health Consequences of Chronic Sleep Loss and Sleep Disorders -- 4 Functional and Economic Impact of Sleep Loss and Sleep-Related Disorders -- 5 Improving Awareness, Diagnosis, and Treatment of Sleep Disorders -- 6 Ensuring Adequate Diagnosis and Treatment: Access, Capacity, and Technology Development -- 7 Opportunities to Improve Career Development in Somnology -- 8 Bolstering Somnology and Sleep Disorders Research Programs -- 9 Building Sleep Programs in Academic Health Centers -- Appendixes -- A Study Process -- B Acronyms -- C Glossary of Major Terms -- D Congressional Language Establishing the National Center on Sleep Disorders Research, 285b-7 -- E Sleep Disorders Research Advisory Board Membership -- F National Institutes of Health Sleep-Related Initiatives: 1994-2004 -- G National Institutes of Health Support of Sleep-Related R01 Grants -- H Summary of NIH Support of Sleep-Related Career Development Awards -- I Summary of NIH Support of Sleep-Related R13, R25, P, F, T, and U Grants -- J Summary of Investment in Sleep-Related Projects at the Top 30 NIH-Funded Institutions -- K Biographical Sketches of Committee Members and Staff -- Index.