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Long-Run Trends In Human Body Mass

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  • LAGERLÖF, NILS-PETTER

Abstract

Over the past two million years human body mass first increased and later declined, peaking about 50,000 years ago. This paper sets up a model of natural selection among body types to explain this pattern. Population, technology, and average body mass evolve endogenously and interdependently in such a way that a takeoff in technological progress generates rising population density and resource depletion. This in turn makes large bodies less useful in food procurement, while keeping their metabolism requirements high. The result is a shift in reproductive advantage from big to small bodies and an endogenous reversal of the time trend in body mass.

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  • Lagerlöf, Nils-Petter, 2007. "Long-Run Trends In Human Body Mass," Macroeconomic Dynamics, Cambridge University Press, vol. 11(3), pages 367-387, June.
    • Handle: RePEc:cup:macdyn:v:11:y:2007:i:03:p:367-387_06
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    Cited by:

    1. Galor, Oded & Klemp, Marc, 2014. "The Biocultural Origins of Human Capital Formation," IZA Discussion Papers 8433, Institute of Labor Economics (IZA).
    2. Galor, Oded & Michalopoulos, Stelios, 2012. "Evolution and the growth process: Natural selection of entrepreneurial traits," Journal of Economic Theory, Elsevier, vol. 147(2), pages 759-780.
    3. Quamrul H. Ashraf & Oded Galor & Marc P. B. Klemp, 2020. "The Ancient Origins of the Wealth of Nations," CESifo Working Paper Series 8624, CESifo.
    4. Fabio Mariani & Marion Mercier & Luca Pensieroso, 2023. "Left-handedness and economic development," Journal of Economic Growth, Springer, vol. 28(1), pages 79-123, March.
    5. Maja Pedersen & Claudia Riani & Paul Sharp, 2021. "Malthus in preindustrial Northern Italy?," Journal of Population Economics, Springer;European Society for Population Economics, vol. 34(3), pages 1003-1026, July.
    6. Galor, Oded & Klemp, Marc, 2013. "Be Fruitful and Multiply? Moderate Fecundity and Long-Run Reproductive Success," MPRA Paper 52049, University Library of Munich, Germany.
    7. Dalgaard, Carl-Johan & Strulik, Holger, 2007. "A Bioeconomic Foundation of the Malthusian Equilibrium: Body Size and Population Size in the Long-Run," Hannover Economic Papers (HEP) dp-373, Leibniz Universität Hannover, Wirtschaftswissenschaftliche Fakultät.
    8. Angus C. Chu, 2023. "Natural selection and Neanderthal extinction in a Malthusian economy," Journal of Population Economics, Springer;European Society for Population Economics, vol. 36(3), pages 1641-1656, July.
    9. Chu, Angus C., 2024. "A Malthusian model of hybridization in human evolution," MPRA Paper 121218, University Library of Munich, Germany.
    10. Carl-Johan Dalgaard & Jakob B. Madsen & Holger Strulik, 2021. "Physiological constraints and the transition to growth: implications for comparative development," Journal of Economic Growth, Springer, vol. 26(3), pages 241-289, September.

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