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Related Experiment Videos

Portion sizes and the obesity epidemic.

Jenny H Ledikwe1, Julia A Ello-Martin, Barbara J Rolls

  • 1Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, USA.

The Journal of Nutrition
|March 30, 2005
PubMed
Summary

Large food portions and high energy density contribute to obesity. Reducing energy density and promoting mindful eating are key strategies for healthier food consumption and weight management.

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Area of Science:

  • Nutrition Science
  • Public Health
  • Behavioral Science

Background:

  • Rising obesity rates correlate with increased food portion sizes and dining away from home.
  • High energy density foods are a significant concern in dietary intake.
  • Laboratory and real-world studies confirm large portions lead to excess energy consumption.

Purpose of the Study:

  • To explore strategies for moderating the impact of portion size on food intake.
  • To investigate the potential of reducing food energy density.
  • To highlight the need for effective educational messages on food choices.

Main Methods:

  • Review of laboratory-based and naturalistic studies on portion size and energy intake.
  • Analysis of the relationship between energy density and food consumption.
  • Exploration of consumer behavior and educational strategies.

Main Results:

  • Large portions of energy-dense foods are linked to increased energy intake.
  • Reducing energy density while maintaining portion size is a promising strategy.
  • Consistent messaging across industries and effective consumer education are crucial.

Conclusions:

  • Strategies to moderate portion size effects are needed to combat obesity.
  • Reducing energy density and promoting low-density foods like fruits and vegetables are effective.
  • Collaboration between industries, policymakers, scientists, and consumers is essential for public health.

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