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50% larger portions increased calorie intake by 423 calories per day
Thursday, September 09, 2010 6:04 am Email this article
Increasing portion size by 50 percent increased calorie intake in both normal weight and overweight men and women by an average of 423 calories per day according to a study by Barbara Rolls and colleagues at the Pennsylvania State University in University Park, Pennsylvania, USA. Effect Persisted
Increased calorie intake sustained over 11 days
This increase in calorie intake persisted for the entire 11 days of the study.
Seen in Normal Weight and Overweight
Increased calorie intake seen in both normal weight and overweight
The increase in calorie intake was seen in both normal weight and overweight subjects.
Conclusion: Portion size affects calorie intake
“These results strengthen the evidence suggesting that increased portions contribute to the overconsumption of energy and to excess body weight,” the researchers concluded.
Rolls BJ, Roe L, Meengs J. The effect of large portion sizes on energy intake is sustained for 11 days. Obesity (Silver Spring). 2007 Jun, 15(6):1535-43.
AUTHOR’S CONTACT INFORMATION
Department of Nutritional Sciences
Pennsylvania State University
226 Henderson Building
University Park, PA 16802-6501
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