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TABLE 7-1 Calcium Dietary Reference Intakes by Life Stage (amount/day)

Life Stage Group

AI

EAR

RDA

UL

Infants

 

 

 

 

0 to 6 mo

200 mg

1,000 mg

6 to 12 mo

260 mg

1,500 mg

Children

 

 

 

 

1–3 y

500 mg

700 mg

2,500 mg

4–8 y

800 mg

1,000 mg

2,500 mg

Males

 

 

 

 

9–13 y

1,100 mg

1,300 mg

3,000 mg

14–18 y

1,100 mg

1,300 mg

3,000 mg

19–30 y

800 mg

1,000 mg

2,500 mg

31–50 y

800 mg

1,000 mg

2,500 mg

51–70 y

800 mg

1,000 mg

2,000 mg

> 70 y

1,000 mg

1,200 mg

2,000 mg

Females

 

 

 

 

9–13 y

1,100 mg

1,300 mg

3,000 mg

14–18 y

1,100 mg

1,300 mg

3,000 mg

19–30 y

800 mg

1,000 mg

2,500 mg

31–50 y

800 mg

1,000 mg

2,500 mg

51–70 y

1,000 mg

1,200 mg

2,000 mg

> 70 y

1,000 mg

1,200 mg

2,000 mg

Pregnancy

 

 

 

 

14–18 y

1,100 mg

1,300 mg

3,000 mg

19–30 y

800 mg

1,000 mg

2,500 mg

31–50 y

800 mg

1,000 mg

2,500 mg

Lactation

 

 

 

 

14–18 y

1,100 mg

1,300 mg

3,000 mg

19–30 y

800 mg

1,000 mg

2,500 mg

31–50 y

800 mg

1,000 mg

2,500 mg

NOTE: AI = Adequate Intake; EAR = Estimated Average Requirement; RDA = Recommended Dietary Allowance; UL = Tolerable Upper Intake Level.

day compared with 755 mg/day from foods alone, while median intake for women more than 70 years of age was 983 mg/day compared to 706 mg/day without supplements. Thus, when intake from supplements is considered, the prevalence of dietary inadequacy for older women is approximately 50 percent (i.e., intake at the 50th percentile is approximately equal to the EAR of 1,000 mg/day calcium in Figure 7-2, Panel B).

Total calcium intakes at the 95th percentile are below the UL of 2,000 mg of calcium per day for most of the adult life stage groups, implying that less than 5 percent are at risk of excessive intake. The exception is older women, who have estimated total calcium intakes at the 95th percentile of 2,364 mg/day for those 51 to 70 years of age, and 2, 298 mg/day for those more than 70 years of age, so more than 5 percent are at risk of excessive



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