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This paper uses the data in the NBER/CPE pilot sample of genealogies to create a new time series on life expectation in the U.S. since 1720. After attaining remarkably high levels toward the end of the eighteenth century, life expectation as measured by e0(10) began a decline that lasted about 80 years before beginning the new rise with which we have long been familiar. Second, time series on the average adult stature of national populations in North America and Europe are used as a measure of nutritional status. The properties of this measure in the analysis of labor welfare and an explanation for the high correlation between stature and the Cini ratio are discussed.The time series on stature is strongly correlated with the series on e0(10) and other measures of mortality. Third, these correlations are used to estimate the contribution of improvements in nutritional status (not diet alone but diet net of prior claims) to the decline in mortality in Europe and America since 1800. Improvements in nutritional status may have accounted for as ifiuch as four tenths of the decline in mortality rates, but nearly all of this effect was concentrated in the reduction of infant mortality. The new findings are used to resolve several paradoxes and the implication of the findings for the standard-of-living controversy are considered.

Life expectancy.

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"As a species, humans have doubled their life expectancy in one hundred years. Medical breakthroughs, public health institutions, rising standards of living, and the other advances of modern life have given each person about 20,000 extra days on average. This book attempts to help the reader understand where that progress came from and what forces keep people alive longer. The author also considers how to avoid decreases in life expectancy as public health systems face unprecedented challenges, and what current technologies or interventions could reduce the impact of future crises. This work illuminates the power of common goals and public resources; the work of activists struggling for reform, and of scientists sharing their findings open-source-style; and of non-profit agencies spreading innovations around the world"--

Life expectancy.

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Life Expectancy --- Mortality --- tables.

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Life expectancy --- Demography

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Life expectancy --- United States