A new study challenges common beliefs about U.S. life expectancy. It finds that people born between 1941 and 2000 lived longer across every U.S. state and region. This goes against earlier ideas that some Southern areas saw little improvement or even declines.
The research was published in BMJ Open. It was done by Héctor Pifarré i Arolas and Jason Fletcher from the University of Wisconsin–Madison, along with José Andrade from the Max Planck Institute for Demographic Research. They used updated data from the United States Mortality Database.
Challenging Older Ideas
The team found much smaller differences in how long people lived since the mid-20th century. This differs from a previous study by Theodore Holford of Yale. Holford's work suggested that many Southern states saw little to no improvement in life expectancy. For example, his study indicated that female life expectancy in Mississippi did not improve for 50 years. The new analysis, however, estimates an increase of about seven years for women in Mississippi.
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Start Your News DetoxPifarré i Arolas noted that their forecasts show everyone born between 1941 and 2000 gained in life expectancy. While gains weren't equal across states, they found no evidence of a huge increase in differences as suggested before.
A Two-Phase Trend
The researchers describe a more complex trend with two phases. In the mid-20th century, Southern states caught up with the rest of the country. This was mainly because more children survived. Later, this progress slowed, and the gap between states stopped closing as quickly.
What This Means for Policy
By looking at trends in different regions and states, the researchers hope to understand what helps people live longer. Differences in populations and policies across states make these comparisons important.
Fletcher explained that knowing all states saw gains, especially the big improvements in the South earlier on, helps change the conversation. It shifts focus to what caused those successes and why progress has slowed. He believes this is where important policy lessons can be found.
This study adds to efforts to analyze long-term trends in life expectancy. It highlights how policies and living conditions can affect how long people live.
Deep Dive & References
Life expectancy gains across US states between 1941 and 2000: a cohort study - BMJ Open, 2026
