Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride

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Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride (1997)
Institute of Medicine (IOM)

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. "Summary." Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. Washington, DC: The National Academies Press, 1997.

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DRI DIETARY REFERENCE INTAKES FOR Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride

TABLE S-2 Criteria and Dietary Reference Intake Values for Phosphorus by Life Stage Group

Life Stage Group ^a	Criterion	EAR (mg/day) ^b	RDA (mg/day) ^c	AI (mg/day) ^d
0 through 6 months	Human milk content	—	—	100
7 through 12 months	Human milk + solid food	—	—	275
1 through 3 years	Factorial approach	380	460	—
4 through 8 years	Factorial approach	405	500	—
9 through 13 years	Factorial approach	1,055	1,250	—
14 through 18 years	Factorial approach	1,055	1,250	—
19 through 30 years	Serum P_i^e	580	700	—
31 through 50 years	Serum P_i	580	700	—
51 through 70 years	Extrapolation of serum P_i from 19 through 50 years	580	700	—
> 70 years	Extrapolation of serum P_i from 19 through 50 years	580	700	—
Pregnancy
≤ 18 years	Factorial approach	1,055	1,250	—
19 through 50 years	Serum P_i	580	700	—
Lactation
≤ 18 years	Factorial approach	1,055	1,250	—
19 through 50 years	Serum P_i	580	700	—
^a All groups except Pregnancy and Lactation are males and females. ^bEAR = Estimated Average Requirement. The intake that meets the estimated nutrient needs of 50 percent of the individuals in a group. ^c RDA = Recommended Dietary Allowance. The intake that meets the nutrient need of almost all (97 to 98 percent) of individuals in a group. ^dAI = Adequate Intake. For healthy infants fed human milk, AI is the estimated mean intake. ^e P_i = Serum inorganic phosphate concentration.