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Weight loss following overeating due to increase in metabolism, not due to fall in appetite
Wednesday, May 18, 2005 2:14 pm Email this article
Normal weight adults who ate 35 percent more calories than normal for two weeks gained an average of 5.1 pounds according to a new study. People went back to eating normal amount of food
After the two weeks was over, participants immediately went back to eating the normal amount of food they had eaten prior to the overfeeding period.
Lost 2.9 lbs in three weeks due to 14% increase in metabolism
Even though they did not reduce calories below normal, over the next three weeks, they lost an average of 2.9 pounds due to a 14 percent increase in metabolism, burning an average of an extra 307 calories per day.
Conclusion: Weight loss following overeating due to increased metabolism, not due to reduced appetite
The authors concluded that “the physiological control of eating behavior in humans is not the major mechanism responsible for the recovery of body weight following a period of overfeeding”, but rather the result of an increase in metabolism.
“[R]ather than eating behavior may be tightly controlled by body weight, as mandated by ‘Set-Point’ theory, body weight may ‘settle’ on a value determined by eating behavior and energy expenditure, as suggested by Levitsky in the ‘Settling-Zone Theory’ of the regulation of body weight,” the authors concluded.
I like this study. It shows the importance of metabolism in helping to control body weight.
It also suggests to me that after a period of gaining weight due to overeating—for example, the holidays—it is probably necessary to go on a reduced calorie diet in order to lose all the weight that you have gained.
The reason I say this, is that after overeating for two weeks, people went back to eating the same amount of food as before.
I’d like to see this study repeated in obese individuals.
Levitsky D, Obarzanek E, Mrdjenovic G, Strupp BJ. Imprecise control of energy intake: absence of a reduction in food intake following overfeeding in young adults. Physiol Behav. 2005 Apr 13, 84(5):669-75.
AUTHOR’S CONTACT INFORMATION
Division of Nutritional Sciences
112 Savage Hall
Ithaca, NY, 14853-6301, United States
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