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Toxic Truth: Lead and Fertility

Author

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  • Clay, Karen

    (Carnegie Mellon University)

  • Portnykh, Margarita

    (Carnegie Mellon University)

  • Severnini, Edson R.

    (Carnegie Mellon University)

Abstract

Using U.S county level data on lead in air for 1978-1988 and lead in topsoil in the 2000s, this paper examines the impact of lead exposure on a critical human function with societal implications – fertility. To provide causal estimates of the effect of lead on fertility, we use two sets of instruments: i) the interaction of the timing of implementation of Clean Air Act regulations and the 1944 Interstate Highway System Plan for the panel data and ii) the 1944 Interstate Highway System Plan for the cross sectional data. We find that reductions in airborne lead between 1978 and 1988 increased fertility rates and that higher lead in topsoil decreased fertility rates in the 2000s. The latter finding is particularly concerning, because it suggests that lead may continue to impair fertility today, both in the United States and in other countries that have significant amounts of lead in topsoil.

Suggested Citation

  • Clay, Karen & Portnykh, Margarita & Severnini, Edson R., 2018. "Toxic Truth: Lead and Fertility," IZA Discussion Papers 11541, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp11541
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    Cited by:

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    2. Daniel S. Grossman & David J.G. Slusky, 2019. "The Impact of the Flint Water Crisis on Fertility," Demography, Springer;Population Association of America (PAA), vol. 56(6), pages 2005-2031, December.
    3. Dave, Dhaval M. & Yang, Muzhe, 2022. "Lead in drinking water and birth outcomes: A tale of two water treatment plants," Journal of Health Economics, Elsevier, vol. 84(C).
    4. Karen Clay & Alex Hollingsworth & Edson R. Severnini, 2023. "The Impact of Lead Exposure on Fertility, Infant Mortality, and Infant Birth Outcomes," NBER Working Papers 31379, National Bureau of Economic Research, Inc.
    5. Clay, Karen & Portnykh, Margarita & Severnini, Edson, 2019. "The legacy lead deposition in soils and its impact on cognitive function in preschool-aged children in the United States," Economics & Human Biology, Elsevier, vol. 33(C), pages 181-192.
    6. Alex Hollingsworth & Mike Huang & Ivan J. Rudik & Nicholas J. Sanders, 2020. "A Thousand Cuts: Cumulative Lead Exposure Reduces Academic Achievement," NBER Working Papers 28250, National Bureau of Economic Research, Inc.
    7. Colmer, Jonathan & Voorheis, John, 2020. "The grandkids aren't alright: the intergenerational effects of prenatal pollution exposure," LSE Research Online Documents on Economics 108495, London School of Economics and Political Science, LSE Library.

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    More about this item

    Keywords

    lead in air; lead in gasoline; lead in topsoil; fertility; Clean Air Act;
    All these keywords.

    JEL classification:

    • Q53 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling
    • J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth
    • N52 - Economic History - - Agriculture, Natural Resources, Environment and Extractive Industries - - - U.S.; Canada: 1913-
    • N92 - Economic History - - Regional and Urban History - - - U.S.; Canada: 1913-

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