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Related Experiment Videos

Change in body weight and longevity.

I M Lee1, R S Paffenbarger

  • 1Department of Epidemiology, Harvard University School of Public Health, Boston, Mass 02115.

JAMA
|October 31, 1992
PubMed
Summary
This summary is machine-generated.

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Significant body weight fluctuations, both loss and gain, are linked to increased mortality risk. Maintaining a stable weight is associated with the lowest all-cause and coronary heart disease mortality rates.

Area of Science:

  • Epidemiology
  • Gerontology
  • Public Health

Background:

  • Body weight fluctuations are common, but their long-term impact on health outcomes remains a significant public health concern.
  • Understanding the relationship between weight change and mortality is crucial for developing effective health interventions.

Purpose of the Study:

  • To investigate the association between body weight change and all-cause, coronary heart disease, and cancer mortality.
  • To determine if weight cycling influences longevity.

Main Methods:

  • A cohort analytic study followed 11,703 Harvard University alumni (mean age 58) from 1977 to 1988.
  • Weight change was assessed based on self-reported data from questionnaires administered in 1962/1966 and 1977.
  • Mortality data (all causes, coronary heart disease, cancer) were obtained from death certificates.

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Main Results:

  • Lowest all-cause mortality was observed in individuals with stable weight (+/- 1 kg).
  • Significant increases in all-cause and coronary heart disease mortality were associated with both substantial weight loss (>5 kg) and weight gain (>5 kg).
  • Weight change did not predict cancer mortality, and findings were independent of smoking, physical activity, and body mass index.

Conclusions:

  • Both intentional and unintentional body weight loss and gain are associated with increased all-cause and coronary heart disease mortality.
  • Weight cycling may be a contributing factor to increased mortality risk.
  • Maintaining a stable body weight appears to be optimal for longevity.