Dietary Reference Intakes for calcium and vitamin D

Life stage group	Calcium			Vitamin D
Life stage group	Estimated average requirement (mg/day)	Recommended dietary allowance (mg/day)	Upper level intake (mg/day)	Estimated average requirement (international units/day)	Recommended dietary allowance (international units/day)	Upper level intake (international units/day)
Infants 0 to 6 months	*	*	1000	¶	¶	1000
Infants 6 to 12 months	*	*	1500	¶	¶	1500
1 to 3 years old	500	700	2500	400	600	2500
4 to 8 years old	800	1000	2500	400	600	3000
9 to 13 years old	1100	1300	3000	400	600	4000
14 to 18 years old	1100	1300	3000	400	600	4000
19 to 30 years old	800	1000	2500	400	600	4000
31 to 50 years old	800	1000	2500	400	600	4000
51 to 70 year old males	800	1000	2000	400	600	4000
51 to 70 year old females	1000	1200	2000	400	600	4000
>70 years old	1000	1200	2000	400	800	4000
14 to 18 years old, pregnant/lactating	1100	1300	3000	400	600	4000
19 to 50 years old, pregnant/lactating	800	1000	2500	400	600	4000

* For infants, adequate intake is 200 mg/day for 0 to 6 months of age and 260 mg/day for 6 to 12 months of age.

¶ For infants, adequate intake is 400 international units/day for 0 to 6 months of age and 400 international units/day for 6 to 12 months of age.

Dietary Reference Intakes: The Essential Guide to Nutrient Requirements. Otten JJ, Hellwig JP, Meyers LD (Eds), The National Academies Press, Washington, DC 2006. pp.530-541. Modified with permission from the National Academies Press, Copyright © 2006, National Academy of Sciences.

Sources: Dietary reference intakes for Thiamin, Riboflavin, Niacin, Vitamin B₆, Folate, Vitamin B₁₂, Panthothenic acid, Biotin, and Choline (1998); Dietary reference intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids (2000); Dietary Reference Intake reports of the Food and Nutrition Board, Institute of Medicine (2010). These reports may be accessed via www.nap.edu.

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Dietary Reference Intakes for calcium and vitamin D