Early-life infectious disease exposure, the “hygiene hypothesis,” and lifespan: Evidence from hookworm disease

Proceedings of the National Academy of Sciences, Volume 122, Issue 35, September 2025. <br/>SignificanceThis study uses a quasi-experimental approach to provide causal evidence regarding the long-term impacts of deworming in childhood on lifespan and morbidity. Deworming before age five is associated with increases in lifespan, and examining …