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Magnesium (mg/d)

Manganese (mg/d)

Molybdenum (μg/d)

Phosphorus (mg/d)

Selenium (μg/d)

Zinc (mg/d)

30*

0.003*

2*

100*

15*

2*

75*

0.6*

3*

275*

20*

3

80

1.2*

17

460

20

3

130

1.5*

22

500

30

5

240

1.9*

34

1,250

40

8

410

2.2*

43

1,250

55

11

400

2.3*

45

700

55

11

420

2.3*

45

700

55

11

420

2.3*

45

700

55

11

420

2.3*

45

700

55

11

240

1.6*

34

1,250

40

8

360

1.6*

43

1,250

55

9

310

1.8*

45

700

55

8

320

1.8*

45

700

55

8

320

1.8*

45

700

55

8

320

1.8*

45

700

55

8

400

2.0*

50

1,250

60

12

350

2.0*

50

700

60

11

360

2.0*

50

700

60

11

360

2.6*

50

1,250

70

13

310

2.6*

50

700

70

12

320

2.6*

50

700

70

12

j It is assumed that women will continue consuming 400 μg from supplements or fortified food until their pregnancy is confirmed and they enter prenatal care, which ordinarily occurs after the end of the periconceptional period—the critical time for formation of the neural tube.

Copyright 2001 by the National Academy of Sciences. All rights reserved.

SOURCES: Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride (1997); Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (1998); Dietary Reference Intakes for Vitamin C, Vitamine E, Selenium, and Carotenoids (2000); and Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc (2001). These reports may be accessed via www.nap.edu.



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