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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Control of Eating Behavior Using a Novel Feedback System
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Evaluating commercial weight loss programmes: an evolution in outcomes research.

M Hamilton1, F Greenway

  • 1Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.

Obesity Reviews : an Official Journal of the International Association for the Study of Obesity
|October 2, 2004
PubMed
Summary
This summary is machine-generated.

Commercial weight loss programs need more scientific evaluation. Future consumers will demand rigorous, independent studies for informed choices, moving beyond testimonials and uncontrolled data.

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Area of Science:

  • Obesity and Weight Management
  • Health Program Evaluation
  • Consumer Health Behavior

Background:

  • Rising obesity rates correlate with increased commercial weight loss programs.
  • Limited research evaluates the efficacy of these commercial weight loss interventions.
  • Commercial programs often rely on testimonials and uncontrolled studies rather than rigorous scientific evaluation.

Purpose of the Study:

  • To review the evolution of evaluation methods for commercial weight loss programs.
  • To highlight the need for increased scientific rigor in assessing program efficacy.
  • To anticipate future consumer demand for evidence-based weight management solutions.

Main Methods:

  • Literature review of evaluation processes for commercial weight loss programs.
  • Analysis of the progression from anecdotal evidence to controlled studies.
  • Examination of the impact of independent, peer-reviewed research on program credibility.

Main Results:

  • The evaluation of commercial weight loss programs has historically lacked scientific rigor.
  • Independent, controlled studies are the gold standard for establishing program credibility and efficacy.
  • Past examples demonstrate that rigorous evaluation can lead to program success (e.g., Slim Fast) or failure (e.g., Simeons hCG clinics).

Conclusions:

  • There is a growing need for scientifically rigorous evaluations of commercial weight loss programs.
  • Future consumers are expected to demand greater evidence-based validation of weight loss claims.
  • Increased scientific scrutiny will promote informed consumer choice and reduce misleading advertising in the weight loss industry.