# We May Not Be Aging Slower. We're Just Starting Later.

- **Evidence Level**: Moderate
- **Journal**: Proceedings of the National Academy of Sciences of the United States of America
- **Sample Size**: Cohort mortality data from 12 countries, adults aged 80+
- **Published**: 2026-04-09
- **Topics**: aging, demography, longevity
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/41955112/

## Summary

A big question in longevity research is whether rising life expectancy means we're actually aging more slowly. This analysis of mortality data from 12 countries suggests the answer is no. After accounting for historical shocks like wars and pandemics, the rate at which aging accelerates after 80 hasn't changed. The gains in lifespan appear to come from pushing back when serious aging begins, not from slowing the process itself.

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_Canonical: https://longevity-germany.com/en/research/we-may-not-be-aging-slower-we-re-just-starting-later · Part of Longevity Cities · Updated 2026-04-09_