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Am J Prev Med. 2007 Apr;32(4):264-272.

Trends in black-white differentials in dietary intakes of U.S. adults, 1971-2002.

Author information

1
Department of Family, Nutrition, and Exercise Sciences, Queens College of the City University of New York, Flushing, New York 11367, USA. ashima.kant@qc.cuny.edu

Abstract

BACKGROUND:

Disparities in the health status of blacks and whites have persisted despite considerable gains in improved health of the U.S. population. Tracking changes in black-white differentials in dietary attributes over time may help in understanding the contribution of diet to these disparities.

METHODS:

Data were used from four National Health and Nutrition Examination Surveys conducted between 1971 and 2002 for trends in self-reported intakes of energy, macronutrients, micronutrients, fruits and vegetables, and the energy density of foods among U.S. non-Hispanic black (n=7099) and white (n=23,314) men and women aged 25 to 74 years. Logistic and linear regression methods were used to adjust for multiple covariates and survey design.

RESULTS:

Energy intake, amount of food, and carbohydrate energy increased, whereas percentage of energy from protein, fat, and saturated fat decreased over time in all race and gender groups (p<0.001). In whites and in black women, energy density increased (p<0.001) in parallel to increases in obesity prevalence. In all surveys, black men and women reported lower intakes of vegetables, potassium, and calcium (p<0.001) than their white counterparts. In men, the race differential in calcium intake increased across surveys (p=0.004).

CONCLUSIONS:

Dietary intake trends in blacks and whites from 1971 to 2002 were similar, which suggests that previously identified dietary risk factors that differentially affect black Americans have not improved in a relative sense.

PMID:
17383557
PMCID:
PMC2001255
DOI:
10.1016/j.amepre.2006.12.011
[Indexed for MEDLINE]
Free PMC Article
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