University of Wisconsin–Madison

Category: 1920–1939: Interwar & economic upheaval

The cost of racial violence

This study reveals the lasting toll of racial violence on Black Americans’ longevity. Researchers find that Black babies whose mothers were pregnant during a local lynching lived about 3.7 months less as adults, on average.

What racial identity meant for a longer life

This study investigates how changing one’s racial classification, specifically, passing as white, affected old-age longevity for African Americans in the pre-Civil Rights era.

How a father’s schooling shapes his children’s lifespan

This study provides strong evidence that a father’s level of education has a measurable impact on his children’s longevity.

The early bird gets the worm

This study explores how birth order affects longevity, finding that later-born siblings live 1–3 months less than their earlier-born counterparts.

Lead exposure and longevity loss

Exposure to lead in water pipes during early life significantly reduces later-life male longevity.

Health boost from hookworm control

The Rockefeller Sanitation Commission’s hookworm eradication campaign in the American South during the 1910s led to an increase of 1 month in later-life longevity for those fully exposed in early life.

Early care, longer life

Early-life exposure to County Health Departments (CHDs), which provided affordable healthcare in underserved areas, is linked to about 0.9 months of additional longevity for those exposed in-utero up to age 4.

The power of clean water

This study examines the long-term benefits of early-life exposure to city-wide water filtration systems introduced in 25 major American cities in the early 20th century.

Early-life disease burden and later-life mortality

This study finds that being born during periods with high infant mortality, reflecting poor disease environments and limited healthcare access, is linked to higher mortality rates later in life, particularly after age 70.

Mill closures, shorter lives

This study finds that boys born in New England counties hit hard by the textile industry collapse in the 1920s–30s lived about 3.6 months less if they stayed in those areas.