Life expectancy gains have slowed sharply, study finds

Science DailyCenterEN 3 min read 100% complete October 27, 2025 at 04:58 AM

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A study led by a University of Wisconsin-Madison professor and published in the Proceedings of the National Academy of Sciences indicates that gains in life expectancy across wealthy nations have slowed significantly since the early 20th century. Researchers examined data from 23 high-income countries, finding that the average life expectancy increase per generation was about five and a half months between 1900 and 1938 but has slowed to around two and a half to three and a half months for those born after 1939. The study projects that no generation born after 1939 will reach an average age of 100, highlighting the challenges in achieving past rates of longevity improvement without major medical breakthroughs.

Key Topics & Entities

Proceedings of the National Academy of Sciences 40% La Follette School of Public Affairs 50% Max Planck Institute for Demographic Research 50% Institut national d'études démographiques 50% José Andrade 60% Carlo Giovanni Camarda 60% Héctor Pifarré i Arolas ×270% University of Wisconsin-Madison 80%

Keywords

life expectancy 100% mortality trends 80% forecasting models 70% high-income countries 60% infant mortality 50% human mortality database 50% improved sanitation 40% medical innovation 40%

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life expectancy mortality trends forecasting models high-income countries infant mortality human mortality database improved sanitation medical innovation

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