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Normal aging and human physiology

W J Chodzko-Zajko1

  • 1Department of Exercise, Leisure, and Sport, Kent State University, OH 44242, USA.

Seminars in Speech and Language
|May 1, 1997
PubMed
Summary

This article explores how environmental factors and genetics influence aging. It contrasts chronological and biological age, highlighting individual differences in aging processes and outcomes.

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Area of Science:

  • Gerontology
  • Physiology
  • Genetics

Background:

  • Normal aging involves complex physiological changes.
  • Environmental factors interact with genetic mechanisms to influence aging.
  • Significant heterogeneity exists in the aging population.

Purpose of the Study:

  • To discuss physiological changes during normal aging.
  • To explore the interaction of environmental factors and genetics on aging.
  • To contrast chronological and biological age.

Main Methods:

  • Review of current scientific understanding.
  • Discussion of physiological and anatomical changes.
  • Analysis of factors influencing aging rate.

Main Results:

  • Aging rates vary significantly between individuals of the same chronological age.
  • Environmental and genetic factors modulate the aging process.
  • Behaviors can influence the progression of senescence.

Conclusions:

  • Biological age is a more accurate indicator of aging than chronological age.
  • Understanding aging requires considering genetic, environmental, and behavioral interactions.
  • The heterogeneity of aging necessitates personalized approaches to health in older adults.

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