Misdirection on the road to Shangri-La |
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Authors: | Olshansky S Jay Carnes Bruce A Hershow Ronald Passaro Doug Layden Jennifer Brody Jacob Hayflick Leonard Butler Robert N Ludwig David S |
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Affiliation: | Division of Epidemiology and Biostatistics, University of Illinois at Chicago, Chicago, IL 60612, USA. sjayo@uic.edu |
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Abstract: | Will life expectancy in the United States rise or fall in this century? The implications of either scenario are far reaching. We contend that the rise of childhood obesity in the United States in the past three decades has been so dramatic that it will soon lead to higher than expected death rates at middle ages and a possible decline in life expectancy by midcentury. The most detrimental health and longevity effects will not be seen for decades--a phenomenon that cannot be detected by current methods used to forecast life expectancy or estimate the number of deaths currently attributable to obesity. This scenario contrasts sharply with the views of mathematical demographers who generate forecasts by relying on the assumption that the U.S. pattern of longevity will follow that of other longer lived nations and on the extrapolation of historical trends in life expectancy into the future. |
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