Portion size

Portion size is the amount of food, measured in calories or weight, apportioned as a serving at a meal. Portion size is a significant consideration in nutrition and weight control.[1]

A distinction is made between a portion size as determined by an external agent, such as a food manufacturer, chef, or restaurant, and a 'self selected portion size' in which an individual has control over the portion in a meal or snack.[2] Self-selected portion size is determined by several factors such as the palatability of a food and the extent to which it is expected to reduce hunger and to generate fullness (see expected satiety).

Evidence from a systematic review of 72 randomized controlled trials indicates that people consistently eat more food when offered larger portion, package, or tableware sizes rather than smaller size alternatives.[3]

See also

Serving size

Expected satiety

References

  1. "Portion size". MedlinePlus. U.S. National Institutes of Health. Archived from the original on January 4, 2015. Retrieved January 28, 2015.
  2. Brunstrom, J.M. (2014). "Mind over platter: pre-meal planning and the control of meal size in humans". International Journal of Obesity 38: S9–12. doi:10.1038/ijo.2014.83.
  3. Hollands, GJ; Shemilt, I; Marteau, TM; Jebb, SA; Lewis, HB; Wei, Y; et al. (September 14, 2015). "Portion, package or tableware size for changing selection and consumption of food, alcohol and tobacco". Cochrane Public Health Group. Cochrane Database of Systematic Reviews 2015 (9): Art. No.: CD011045. doi:10.1002/14651858.CD011045.pub2.


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