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Study: External cues key to overeating

Dec. 19, 2005 at 11:37 PM   |   Comments

TORONTO, Dec. 19 (UPI) -- A University of Toronto study finds that people tend to overeat because of external cues like portion size and the behavior of their companions.

Psychologists Peter Herman and Janet Polivy examined 30 years of research on eating habits. Herman said that people are often "rudderless" when confronted with food.

"Frequently, eating occurs within what we have termed a zone of biological indifference, in which the individual is neither genuinely hungry nor genuinely sated," he said. "Without any particular biological reason to start, continue or stop eating, we are particularly vulnerable to socially based influences."

They found, for example, that someone who might refuse a second helping at a formal dinner party will overeat at an all-you-can-eat buffet or while eating with family or close friends.

The study was published in Psychology & Behavior.

© 2005 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
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