期刊
AMERICAN JOURNAL OF CLINICAL NUTRITION
卷 97, 期 4, 页码 848-853出版社
OXFORD UNIV PRESS
DOI: 10.3945/ajcn.112.052662
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资金
- Intramural CDC HHS [CC999999] Funding Source: Medline
Background: Energy intake is a key determinant of weight. Objective: Our objective was to examine trends in energy intake in adults in the United States from 1971-1975 to 2009-2010. Design: The study was a trend analysis of 9 national surveys in the United States that included data from 63,761 adults aged 20-74 y. Results: Adjusted mean energy intake increased from 1955 kcal/d during 1971-1975 to 2269 kcal/d during 2003-2004 and then declined to 2195 kcal/d during 2009-2010 (P-linear trend < 0.001, P-nonlinear trend < 0.001). During the period from 1999-2000 to 2009-2010, no significant linear trend in energy intake was observed (P = 0.058), but a significant nonlinear trend was noted (P = 0.042), indicating a downward trend in energy intake. Significant decreases in energy intake from 1999-2000 to 2009-2010 were noted for participants aged 20-39 y, men, women, and participants with a BMI (in kg/m(2)) of 18.5 to <25 and >= 30. Conclusion: After decades of increases, mean energy intake has decreased significantly since 2003-2004. Am J Clin Nutr 2013;97:848-53.
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