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Parallel Progress in Perceived Age and Life Expectancy.

Ulrich K Steiner1, Lisbeth A Larsen2, Kaare Christensen2

  • 1Department of Biology, Center on Population Dynamics, University of Southern Denmark, Odense, Denmark.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|April 16, 2019
PubMed
Summary
This summary is machine-generated.

Human facial age perception has significantly changed over a decade, mirroring increased life expectancy. People appear younger for their age, suggesting visible aging reflects past life events rather than future longevity.

Keywords:
Aging processBiological ageBiomarkerChronological age

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Area of Science:

  • Gerontology
  • Biogerontology
  • Sociology of Aging

Background:

  • Human life expectancy is increasing globally, accompanied by improved health and a potential reduction in biological age relative to chronological age.
  • Quantifying shifts in biological age across populations over time remains challenging due to diverse aging biomarkers.
  • This study investigates changes in perceived facial age and their correlation with evolving life expectancy trends.

Purpose of the Study:

  • To analyze changes in the perception of facial age over a ten-year period.
  • To determine if observed changes in age perception correlate with advancements in life expectancy.
  • To explore the relationship between facial aging, chronological age, and life expectancy.

Main Methods:

  • Facial images from 2001 were re-evaluated over a decade to track changes in age perception.
  • Statistical analysis was employed to compare shifts in perceived facial age with concurrent changes in life expectancy data.
  • The study focused on how age perception in 2012 compared to earlier perceptions, specifically noting differences for individuals over 70.

Main Results:

  • Facial age perception demonstrated substantial changes over the study period, aligning with increases in life expectancy.
  • By 2012, individuals over 70 years old needed to appear, on average, 2.3 years younger to be perceived as the same age as they were in 2002.
  • Age perception in elderly individuals paralleled changes in life expectancy at birth.

Conclusions:

  • Facial age perception appears to be a better indicator of past aging experiences than a predictor of future lifespan.
  • The findings suggest that visible aging reflects accumulated life events, aligning with historical life expectancy data.
  • Further research into age perception across younger demographics is recommended to understand if aging processes are being delayed or slowed.