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
References
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