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More Frequent Meals And Bigger Portions Lead To Elevated Energy Intake Of American Adults

June 28, 2011: 10:34 AM EST
A study revealed that changes in eating and drinking occasions (EOs) and portion size (PS) are the main causes of changes in total energy (TE) intake of American adults over a period of 30 years. Researchers used cross-sectional data from the Nationwide Food Consumption Survey (1977–1978), Continuing Survey of Food Intakes of Individuals (1989–1991), and National Health and Nutrition Examination Surveys (1994–1998 and 2003–2006) for adults aged 19 years and above to analyze TE and its components (PS, EO, and energy density). Results showed an increase in TE intake and the number of daily EOs between 1977–1978 and 2003–2006, while average PS rose between 1977–1978 and 1994–1998.
Kiyah J. Duffey, Barry M. Popkin, "Energy Density, Portion Size, and Eating Occasions: Contributions to Increased Energy Intake in the United States, 1977–2006", PLoS Medicine, June 28, 2011, © Duffey, Popkin
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