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Outcomes of weight-loss programs.

J C Cogan1, E D Rothblum

  • 1Department of Psychology, University of Vermont.

Genetic, Social, and General Psychology Monographs
|November 1, 1992
PubMed
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Weight loss studies from the 1980s show modest short-term weight loss followed by regain. The effectiveness of dieting techniques for treating obesity is questioned due to limited physical health improvements.

Area of Science:

  • Obesity research
  • Behavioral medicine
  • Public health

Background:

  • Obesity is a significant public health concern.
  • Dieting is a common approach for weight management.
  • Long-term efficacy of weight loss interventions requires evaluation.

Purpose of the Study:

  • To evaluate the effectiveness of weight loss interventions from the 1980s.
  • To assess weight change, overweight percentage, and physical health improvements.
  • To determine if treatment efficacy varied over the decade or with success rates.

Main Methods:

  • Analysis of a stratified random sample of 50 weight-loss studies from the 1980s.
  • Examination of data on weight change, overweight percentage, and physical health.

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  • Comparison of studies based on treatment success and time of publication.

    • Main Results:

    • Typical participant: White, middle-class woman, 48% overweight.
    • Average loss: 12.8 lb over 13 weeks, with 4.3 lb regained in 6.5 months.
    • No significant improvement in treatment efficacy was observed over time or with more successful conditions.
    • Limited data on physical health changes and obesity level shifts.

    Conclusions:

    • Weight loss interventions from the 1980s demonstrated limited long-term success.
    • Dieting techniques may not be a sufficiently effective strategy for treating obesity.
    • Further research is needed on improving physical health outcomes in obesity management.