Table of Contents

1 Front Matter; 2 Summary; 3 1 Difference Between Life Expectancy in the United States and Other High-Income Countries; 4 2 Causes of Death, Health Indicators, and Divergence in Life Expectancy; 5 3 The Role of Obesity; 6 4 The Role of Physical Activity; 7 5 The Role of Smoking; 8 6 The Role of Social Networks and Social Integration; 9 7 The Role of Health Care; 10 8 The Role of Hormone Therapy; 11 9 The Role of Inequality; 12 10 Conclusions; 13 References; 14 Biographical Sketches of Committee Members and Staff