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Weight loss without the hunger: Eat a lighter lunch, scientists say

Date:
August 30, 2011
Source:
Cornell University
Summary:
Losing weight without a grumbling stomach or expensive liquid diet can be as simple as eating a lighter lunch, a new study finds. Participants who ate portion-controlled lunches did not compensate by eating more calories later in the day, leading researchers to believe the human body does not possess the mechanisms necessary to notice a small drop in energy intake.

Losing weight without a grumbling stomach or expensive liquid diet can be as simple as eating a lighter lunch, finds a new Cornell University study to be published in the October issue of the journal Appetite.

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Participants who ate portion-controlled lunches did not compensate by eating more calories later in the day, leading researchers to believe the human body does not possess the mechanisms necessary to notice a small drop in energy intake.

"Making small reductions in energy intake to compensate for the increasing number of calories available in our food environment may help prevent further weight gain, and one way of doing this could be to consume portion-controlled lunches a few times a week," said doctoral student Carly Pacanowski, who co-authored the study with David Levitsky, Cornell professor of nutritional sciences and of psychology.

The study closely monitored the food intake of 17 volunteers who ate whatever they wanted from a buffet for one week. For the next two weeks, half the group selected their lunch by choosing from one of six commercially available, portion-controlled foods, such as Chef Boyardee Pasta or Campbell's Soup at Hand, but could eat as much as they wished at other meals or snacks. For the final two weeks, the other half of volunteers followed the same regimen.

While eating portion-controlled lunches, each participant consumed 250 fewer calories per day and lost, on average, 1.1 pounds.

"The results confirm that humans do not regulate energy intake with any precision. Over a year, such a regimen would result in losing at least 25 pounds," said Levitsky, who adds the study demonstrates one simple, low-cost way to consume fewer calories.


Story Source:

The above story is based on materials provided by Cornell University. The original article was written by Stephanie Salato and Susan S. Lang. Note: Materials may be edited for content and length.


Journal Reference:

  1. David A. Levitsky, Carly Pacanowski. Losing weight without dieting. Use of commercial foods as meal replacements for lunch produces an extended energy deficit. Appetite, 2011; 57 (2): 311 DOI: 10.1016/j.appet.2011.04.015

Cite This Page:

Cornell University. "Weight loss without the hunger: Eat a lighter lunch, scientists say." ScienceDaily. ScienceDaily, 30 August 2011. <www.sciencedaily.com/releases/2011/08/110829131320.htm>.
Cornell University. (2011, August 30). Weight loss without the hunger: Eat a lighter lunch, scientists say. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2011/08/110829131320.htm
Cornell University. "Weight loss without the hunger: Eat a lighter lunch, scientists say." ScienceDaily. www.sciencedaily.com/releases/2011/08/110829131320.htm (accessed November 24, 2014).

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