. "5 Dietary Reference Intakes for Adequacy: Calcium and Vitamin D." Dietary Reference Intakes for Calcium and Vitamin D. Washington, DC: The National Academies Press, 2011.
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DRI Dietary Reference Intakes Calcium Vitamin D
TABLE 5-1 Calcium Dietary Reference Intakes (DRIs) for Adequacy (amount/day)
Life Stage Group
AI
EAR
RDA
Infants
0 to 6 mo
200 mg
—
—
6 to 12 mo
260 mg
—
—
Children
1–3 y
—
500 mg
700 mg
4–8 y
—
800 mg
1,000 mg
Males
9–13 y
—
1,100 mg
1,300 mg
14–18 y
—
1,100 mg
1,300 mg
19–30 y
—
800 mg
1,000 mg
31–50 y
—
800 mg
1,000 mg
51–70 y
—
800 mg
1,000 mg
> 70 y
—
1,000 mg
1,200 mg
Females
9–13 y
—
1,100 mg
1,300 mg
14–18 y
—
1,100 mg
1,300 mg
19–30 y
—
800 mg
1,000 mg
31–50 y
—
800 mg
1,000 mg
51–70 y
—
1,000 mg
1,200 mg
> 70 y
—
1,000 mg
1,200 mg
Pregnancy
14–18 y
—
1,100 mg
1,300 mg
19–30 y
—
800 mg
1,000 mg
31–50 y
—
800 mg
1,000 mg
Lactation
14–18 y
—
1,100 mg
1,300 mg
19–30 y
—
800 mg
1,000 mg
31–50 y
—
800 mg
1,000 mg
NOTE: AI = Adequate Intake; EAR = Estimated Average Requirement; RDA = Recommended Dietary Allowance.
for infants are based on mean intake data from infants fed human milk as the principal fluid during the first year of life and on the studies that have determined the mean calcium content of breast milk. Additionally, information on calcium absorption and calcium accretion is taken into account.
With respect to estimating AIs for calcium for infants, studies reviewed previously in this report have provided the following information:
Based on infant weighing studies, a reasonable average amount of breast milk consumed is 780 mL/day. The average level of calcium within a liter of breast milk is 259 mg (± 59 mg). It is therefore estimated that the intake of calcium for infants fed exclusively human milk is 202 mg/day. This number is rounded to 200 mg/day.
