TABLE S-3 Criteria and Dietary Reference Intake Values for Magnesium by Life Stage Group

   

EAR (mg/day) a

RDA (mg/day) b

AI (mg/day) c

Life Stage Group

Criterion

Male

Female

Male

Female

Male

Female

0 through 6 months

Human milk content

30

30

7 through 12 months

Human milk + solid food

75

75

1 through 3 years

Extrapolation of balance from older children

65

65

80

80

   

4 through 8 years

Extrapolation of balance from older children

110

110

130

130

   

9 through 13 years

Balance studies

200

200

240

240

   

14 through 18 years

Balance studies

340

300

410

360

   

19 through 30 years

Balance studies

330

255

400

310

   

31 through 50 years

Balance studies

350

265

420

320

   

51 through 70 years

Balance studies

350

265

420

320

   

> 70 years

Intracellular studies; decreases in absorption

350

265

420

320

   

Pregnancy

≤ 18 years

Gain in lean mass

 

335

 

400

   

19 through 30 years

Gain in lean mass

 

290

 

350

   

31 through 50 years

Gain in lean mass

 

300

 

360

   

Lactation

≤ 18 years

Balance studies

 

300

 

360

   

19 through 30 years

Balance studies

 

255

 

310

   

31 through 50 years

Balance studies

 

265

 

320

   

a EAR = Estimated Average Requirement. The intake that meets the estimated nutrient needs of 50 percent of the individuals in a group.

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

c AI = Adequate Intake. For healthy infants fed human milk, AI is the estimated mean intake.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement