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Related Experiment Videos

Smoking, physical activity, and active life expectancy.

L Ferrucci1, G Izmirlian, S Leveille

  • 1Geriatric Department, I Fraticini, National Research Institute (INRCA), Florence, Italy.

American Journal of Epidemiology
|April 7, 1999
PubMed
Summary

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Quitting smoking and engaging in regular physical activity significantly increases healthy life expectancy. Nonsmokers live longer and experience fewer disability years, especially with higher activity levels.

Area of Science:

  • Gerontology
  • Public Health
  • Epidemiology

Background:

  • Lifestyle factors like smoking and physical activity profoundly impact healthspan and lifespan.
  • Understanding their effects on active versus disabled life expectancy is crucial for aging populations.

Purpose of the Study:

  • To estimate the effects of smoking status and physical activity levels on active and disabled life expectancy.
  • To provide evidence supporting lifestyle modifications for a longer, healthier life in older adults.

Main Methods:

  • Utilized data from the Established Populations for Epidemiologic Studies of the Elderly (EPESE) cohort.
  • Analyzed baseline data (1981-1983) and six annual follow-ups for mortality and disability in 8,604 participants aged 65+.
  • Employed a Markov chain model to estimate active and disabled life expectancies based on smoking and physical activity.
Keywords:
AdultAge FactorsAgedAmericasBehaviorComparative StudiesDemographic FactorsDeveloped CountriesDifferential MortalityHandicappedLength Of LifeLife ExpectancyLife StyleMortalityNorth AmericaNorthern AmericaPopulationPopulation CharacteristicsPopulation DynamicsResearch MethodologySmokingStudiesUnited States

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Main Results:

  • Nonsmokers lived 1.6-3.9 years longer than smokers, with a greater difference observed in men.
  • Higher levels of physical activity were significantly associated with increased life expectancy for both smokers and nonsmokers.
  • Increased physical activity correlated with reduced years of disability before death.

Conclusions:

  • Refraining from smoking and maintaining regular physical activity are strong predictors of a longer and healthier life.
  • These lifestyle choices extend active life expectancy and reduce disability in later life.