FOOD AND NUTRITION BOARD, NATIONAL ACADEMY OF SCIENCES-INSTITUTE OF MEDICINE DIETARY REFERENCE INTAKES, 1997

 

Calcium

Phosphorus

 

Magnesium

 

Vitamin D

Fluoride

Life-Stage Group

AIa (mg/day)

RDAb (mg/day)

AI (mg/day)

RDA (mg/day)

AI (mg/day)

AIc,d (µg/day)

AI (mg/day)

Infants

0 to 6 months

210

 

100

 

30

5

0.01

6 to 12 months

270

 

275

 

75

5

0.5

Children

1 through 3 years

500

460

 

80

 

5

0.7

4 through 8 years

800

500

 

130

 

5

1

Males

9 through 13 years

1,300

1,250

 

240

 

5

2

14 through 18 years

1,300

1,250

 

410

 

5

3

19 through 30 years

1,000

700

 

400

 

5

4

31 through 50 years

1,000

700

 

420

 

5

4

51 through 70 years

1,200

700

 

420

 

10

4

> 70 years

1,200

700

 

420

 

15

4

Females

9 through 13 years

1,300

1,250

 

240

 

5

2

14 through 18 years

1,300

1,250

 

360

 

5

3

19 through 30 years

1,000

700

 

310

 

5

3

31 through 50 years

1,000

700

 

320

 

5

3

51 through 70 years

1,200

700

 

320

 

10

3

> 70 years

1,200

700

 

320

 

15

3

Pregnancy

≤ 18 years

1,300

1,250

 

400

 

5

3

19 through 30 years

1,000

700

 

350

 

5

3

31 through 50 years

1,000

700

 

360

 

5

3

Lactation

≤ 18 years

1,300

1,250

 

360

 

5

3

19 through 30 years

1,000

700

 

310

 

5

3

31 through 50 years

1,000

700

 

320

 

5

3

a AI = Adequate Intake. The observed average or experimentally set intake by a defined population or subgroup that appears to sustain a defined nutritional status, such as growth rate, normal circulating nutrient values, or other functional indicators of health. AI is utilized if sufficient scientific evidence is not available to derive an EAR. For healthy breastfed infants, AI is the mean intake. All other life-stage groups should be covered at the AI value. The AI is not equivalent to a RDA.

b RDA = Recommended Dietary Allowance. The intake that meets the nutrient need of almost all (97–98 percent) individuals in a group.

c As cholecalciferol. 1 µg cholecalciferol = 40 IU vitamin D.

d In the absence of adequate exposure to sunlight.

© Copyright 1997 by the National Academy of Sciences. All rights reserved.



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