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When given twice as much food, women ate 530 calories more, men ate 812 calories more
Friday, June 08, 2007 1:22 am Email this article
When people are presented with larger portions of food, they eat more according to research from researchers at Pennsylvania State University in University Park, Pennsylvania, USA. 50% more food, 16% increase in calorie intake
50% more food, women ate an extra 335 calories per day, men an extra 504 calories
When people were given 50 percent more food, women consumed an extra 335 calories per day, and men consumed an extra 504 calories per day, an increased of 16 percent.
100% more food, 26% increase in calorie intake
100% more food, women ate an extra 530 calories per day, men an extra 812 calories
When given twice as much food (100 percent more food), women ate an extra 530 calories per day, while men ate an additional 812 calories per day, an increase of 26 percent.
Conclusion: Increasing portion size, increases calorie intake
“Increasing the portion size of all foods resulted in a significant increase in energy intake that was sustained over 2 days,” the researchers concluded.
“These data support suggestions that large portions are associated with excess energy intake that could contribute to increased body weight.”
Subjects: 32 adults
The study was conducted with 32 adults from a university community.
Conditions: Feed 2 days a week for 3 weeks
On two consecutive days in each of three weeks, subjects were feed meals in a controlled setting that contained the normal amount of calories that they ate, one-and-a-half times the amount of calories that they ate, or twice as many calories as they ate.
They were also given snacks to eat between meals.
The increased calorie consumption was the same on each of the two days.
Rolls BJ, Roe L, Meengs J. Larger portion sizes lead to a sustained increase in energy intake over 2 days. J Am Diet Assoc. 2006 Apr, 106(4):543-49.
AUTHOR’S CONTACT INFORMATION
Department of Nutritional Sciences
The Pennsylvania State University
226 Henderson Building
University Park, PA 16802-6501, USA
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