Dietary Reference Intakes Recommended Intakes for Individuals

Life stage group

Calcium, mg/d

Phosphorus, mg/d

Magnesium, mg/d

Vitamin D, v-g/d*"

Fluoride, mg/d

Thiamin, mg/d

Riboflavin, mg/d

Niacin, mg/dc

Infants

0-6 mo

210*

100*

30*

5*

0.01*

0.2*

0.3*

2*

7-12 mo

270*

275*

75*

5*

0.5*

0.3*

0.4*

4*

Children

1-3 y

500*

460

80

5*

0.7*

0.5

0.5

6

4-8 y

800*

500

130

5*

1*

0.6

0.6

8

Males

9-13 y

1300*

1250

240

5*

2*

0.9

0.9

12

14-18 y

1300*

1250

410

5*

3*

1.2

1.3

16

19-30 y

1000*

700

400

5*

4*

1.2

1.3

16

31-50 y

1000*

780

420

5*

4*

1.2

1.3

16

51-70 y

1200*

700

420

10*

4*

1.2

1.3

16

>70 y

1200*

700

420

15*

4*

1.2

1.3

16

Females

9-13 y

1300*

1250

240

5*

2*

0.9

0.9

12

14-18 y

1300*

1250

360

5*

3*

1.0

1.0

14

19-30 y

1000*

700

310

5*

3*

1.1

1.1

14

31-50 y

1000*

700

320

5*

3*

1.1

1.1

14

51-70 y

1200*

700

320

10*

3*

1.1

1.1

14

>70 y

1200*

700

320

15*

3*

1.1

1.1

14

Pregnancy

<18 y

1300*

1250

400

5*

3*

1.4

1.4

18

19-30 y

1000*

700

350

5*

3*

1.4

1.4

18

31-50 y

1000*

700

360

5*

3*

1.4

1.4

18

Lactation

<18 y

1300*

1250

360

5*

3*

1.4

1.6

17

19-30 y

1000*

700

310

5*

3*

1.4

1.6

17

31-50 y

1000*

700

320

5*

3*

1.4

1.6

17

Note: This table presents Recommended Dietary Allowances (RDAs) in bold type and Adequate Intakes (AIs) in ordinary type followed by an asterisk (*). RDAs and AIs may both be used as goals for individual intake. RDAs are set to meet the needs of almost all (97 to 98%) individuals in a group. For healthy breastfed infants, the AI is the mean intake. The AI for other life-stage and gender groups is believed to cover needs of all individuals in the group, but lack of data or uncertainty in the data prevent being able to specify with confidence the percentage of individuals covered by this intake.

aAs cholecalciferol. 1-mg cholecalciferol = 40-IU vitamin D.

'In the absence of adequate exposure to sunlight.

cAs niacin equivalents (NE). 1 mg of niacin = 60 mg of tryptophan; 0-6 months = preformed niacin (not NE).

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