Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc

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Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc (2001)
Food and Nutrition Board (FNB)
Institute of Medicine (IOM)

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. "9 Iron." Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: The National Academies Press, 2001.

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Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc

TABLE 9-10 Summary Illustration of Median Absorbed Iron Requirements for Children and Adolescents, Aged 9 through 18 Years^a

		Components of Iron Needs
Age (y)	Median Weight^b (kg)	Change in Hemoglobin Mass (mg/d)	Basal Loss (mg/d)	Tissue Deposit (mg/d)	Storage (mg/d)	Menses (mg/d)^c
Boys
9	32.5	0.45	0.48	0.002	0	0
10	36.6	0.50	0.49	0.002	0	0
11	40.0	0.62	0.50	0.002	0	0
12	48.1	0.65	0.51	0.002	0	0
13	52.3	0.75	1.05	0.004	0	0
14	61.2	0.75	1.18	0.004	0	0
15	62.0	0.80	0.43	0.001	0	0
16	66.5	0.78	0.44	0.001	0	0
17	69.9	0.84	0.46	0.001	0	0
18	68.3	0.81	0.16	0	0	0
Girls
9	31.9	0.45	0.40	0.002	0	0^b
10	35.8	0.50	0.41	0.002	0	0^b
11	44.0	0.63	0.42	0.002	0	(0.45)^b
12	46.3	0.65	0.63	0.003	0	(0.45)^b
13	53.5	0.75	0.64	0.003	0	(0.45)^b
14	53.4	0.75	0.14	0.001	0	0.45
15	56.9	0.80	0.14	0.001	0	0.45
16	55.6	0.78	0.14	0.001	0	0.45
17	60.0	0.83	0.15	0.001	0	0.45
18	58.0	0.81	0.10	0	0	0.45
^a Summation of the median iron components and dividing by 18 percent bioavailability does not yield values that are equivalent to the 50th and 97.5th percentile data shown in Appendix Table I-3. This is because the summation of the median of non-normal distributions (above) do not yield the median of simulation models that represent normalized data. ^b Third National Health and Nutrition Examination Survey data (not demographically weighted). ^c The model assumes that all girls are menstruating at age 14.0 years and after; it also assumes that no girls reach menarche before age 14. This is not a valid assumption. In working with individuals, menstrual status can be ascertained and an adjustment can be made.