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Published on: June 21, 2019
Isocaloric meal and snack foods differentially affect eating behavior
Elizabeth D Capaldi1, Jacqueline Quinn Owens, Gregory J Privitera
1University at Buffalo, SUNY, 206 Park Hall, Buffalo, NY 14260, USA.
Appetite
|January 31, 2006
Summary
Foods perceived as meals reduce subsequent food intake compared to snacks, but this effect is short-term and depends on cognitive perceptions, not food weight. Understanding these perceptions is key to influencing eating behavior.
Area of Science:
- Behavioral Science
- Nutritional Psychology
- Human Nutrition
Background:
- Understanding factors influencing food intake is crucial for managing appetite and body weight.
- Cognitive factors, such as food categorization, may play a significant role in regulating subsequent energy consumption.
- Previous research has explored the impact of preload characteristics on eating behavior, but the specific influence of meal versus snack categorization requires further investigation.
Purpose of the Study:
- To investigate whether foods categorized as meals suppress subsequent intake more effectively than isocaloric snack foods.
- To examine the duration of this effect and its independence from physical properties of the food, such as weight.
- To determine the role of subjective perceptions in mediating the impact of food categorization on consumption.
Main Methods:
- Three experimental variations were conducted, manipulating the categorization (meal vs. snack) of isocaloric preload food loads.
- Subsequent food intake and food choices were measured at different time points following the preload.
- Subjective perceptions of the preload foods were assessed to understand their influence on intake.
Main Results:
- Participants consumed significantly less food following a preload categorized as a meal compared to a snack (Variation 1).
- This suppressive effect on intake was short-lived, observed only 20 minutes post-preload, not after 3 hours (Variation 2).
- The effect was independent of the physical weight of the preload foods and was strongly linked to the participants' cognitive perception of the foods as either a meal or a snack (Variation 3).
Conclusions:
- Cognitive representations of food, specifically their categorization as a meal or snack, significantly influence subsequent energy intake.
- The impact of meal versus snack categorization on appetite regulation is temporary and mediated by subjective perception rather than objective preload characteristics.
- These findings highlight the importance of psychological factors in understanding and potentially modifying eating behaviors.
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