Early-life lead exposure and male longevity: Evidence from historical municipal water systems

Jason Fletcher and Hamid Noghanibehambari

Explorations in Economic History, 2025, vol. 97, issue C

Abstract: Several research strands document the life-cycle impacts of lead exposure during early life. Yet little is known about the long-run effects of lead exposure during early life on old-age mortality outcomes. In this study, we employ Social Security Administration death records linked to the full-count 1940 census and document that birth-city lead status negatively affects later life old age longevity. These impacts are larger for cities with acidic water and older pipeline systems that allow higher lead levels to leach into drinking water. Further, we show that the impacts are almost exclusively concentrated on the lead status of the birth-city and not the city of residence later in life. An instrumental variable strategy suggests reductions in longevity associated with birth-city lead status of about 9.6 months. We also find education, socioeconomic standing, and income reductions during early adulthood as candidate mechanisms. Finally, we use WWII enlistment data and observe reductions in measures of cognitive ability among lead-exposed individuals.

Keywords: Mortality; Longevity; Lead; Water pollution; In-utero exposures; Early-life exposures; Historical data; Public health; Urban infrastructure (search for similar items in EconPapers)
JEL-codes: I18 J18 N51 N52 O18 (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:exehis:v:97:y:2025:i:c:s0014498325000488

DOI: 10.1016/j.eeh.2025.101701

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