Reducing Portion Size Reduces Food Intake and Plate Waste
- 6 September 2010
- Vol. 18 (9), 1864-1866
- https://doi.org/10.1038/oby.2009.480
Abstract
As portion size (PS) increases, so does food intake. The effect of decreasing PS on food intake in a nonlaboratory setting is unknown. This 5-week study sought to determine whether decreasing PS resulted in decreased intake of the same food, and if so, at what point further PS reductions might lack benefit. It also assessed effects of PS reduction on food production and waste in a university all-you-can-eat dining facility (DF). Subjects were primarily freshmen who regularly ate lunch at the DF, and self-selected French fries (FF) presented in individual paper bags, portioned originally at 88 g, and decreased approximately 15 g/week for 3 weeks. Diners were covertly observed choosing one or more bags. Total FF production and plate waste (PW) were determined daily. Decreasing PS resulted in significant decreases in consumption per diner (P < 0.05) and PW (P < 0.05), and nonsignificant decreases in total FF consumption and production. PS was positively correlated with consumption per diner (r = 0.897, P = 0.001) and PW (r = 0.852, P = 0.001), but inversely correlated with number of diners choosing >or=2 bags (r = -0.809, P = 0.003). Total FF production was positively correlated with PW (r = 0.728, P = 0.011). This study shows that reducing PS of a particular item in an all-you-can-eat environment results in reduced intake of that food for most individuals, and that reducing PS reduces PW and food production.This publication has 14 references indexed in Scilit:
- American College Health Association-National College Health Assessment Spring 2008 Reference Group Data Report (Abridged): The American College Health AssociationJournal of American College Health, 2009
- Changes in Weight and Health Behaviors from Freshman through Senior Year of CollegeJournal of Nutrition Education and Behavior, 2008
- The Effect of Large Portion Sizes on Energy Intake Is Sustained for 11 DaysObesity, 2007
- Larger Portion Sizes Lead to a Sustained Increase in Energy Intake Over 2 DaysJournal of the American Dietetic Association, 2006
- Bad Popcorn in Big Buckets: Portion Size Can Influence Intake as Much as TasteJournal of Nutrition Education and Behavior, 2005
- The More Food Young Adults Are Served, the More They OvereatJournal of Nutrition, 2004
- The freshman weight gain: a model for the study of the epidemic of obesityInternational Journal of Obesity, 2004
- Increasing the portion size of a sandwich increases energy intakeJournal of the American Dietetic Association, 2004
- Increased Portion Size Leads to Increased Energy Intake in a Restaurant MealObesity Research, 2004
- Increasing the portion size of a packaged snack increases energy intake in men and womenAppetite, 2004