Explaining Long-Term Trends in Health and Longevity is a collection of essays by Nobel laureate Robert W. Fogel on the theory and measurement of aging and health-related variables. Dr. Fogel analyzes historic data on height, health, nutrition, and life expectation to provide a clearer understanding of the past, illustrate the costs and benefits of using such measures, and note the difficulties of drawing conclusions from data intended for different purposes. Dr. Fogel explains how the basic findings of the anthropometric approach to historical analysis have helped reinterpret the nature of...