FIGURE 13-3. Distribution of reported total folate intake for men and women aged 19 years and older, Third National Health and Nutrition Examination Survey, 1988–1994.

FIGURE 13-3Distribution of reported total folate intake for men and women aged 19 years and older, Third National Health and Nutrition Examination Survey, 1988–1994

The area under each curve represents 100 percent of that population. More than 50 percent of young women have reported folate intakes (diet plus supplements) below the Estimated Average Requirement (EAR). However, these data are not adjusted for the higher bioavailability of folate as consumed in fortified foods and supplements as was done in determining the EAR. Furthermore, the reported intakes are likely to be underestimates of the actual intake because of limitations in the methods used to analyze food folate. Data have been adjusted for within-person variability using the method of Nusser et al. (1996). Folate intake values were rounded to the nearest 100 μg and all values greater than 1,000 μg were recorded as 1,000 μg. Data points are from unpublished data on percentiles of B vitamin intake from food and supplements, J.D. Wright, National Center for Health Statistics, Centers for Disease Control and Prevention, 1998.

From: 13, Uses of Dietary Reference Intakes

Cover of Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline
Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline.
Institute of Medicine (US) Standing Committee on the Scientific Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline.
Washington (DC): National Academies Press (US); 1998.
Copyright © 1998, National Academy of Sciences.

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