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Dietary Reference Intakes

Life Stage Group
Estimated ​Average Requirement (mg/Day)
Recommended Dietary Allowance (mg/Day)
Upper
Level
​Intake (mg/Day)
Estimated Average Requirement (IU/Day)
Recommended Dietary Allowance (IU/Day)
Upper
Level
Intake (IU/Day)
Infants 0 to 6 Months

 *

 *

1.000

 **

 **

1000

Infants 6 to 12 Months

 *

 *

1.500

 **

 **

1500

1-3 Years Old

500

700

2500

400

600

2500

4-8 Years Old

800

1000

2500

400

600

3000

9-13 Years Old

1.100

1300

3000

400

600

4000

14-18 Years Old

1.100

1300

3000

400

600

4000

19-30 Years Old

800

1000

2500

400

600

4000

31-50 Years Old

800

1000

2500

400

600

4000

51-70 Year Old Males

800

1000

2000

400

600

4000

>70 years old

1.000

1200

2000

400

600

4000

14-18 Years Old, Pregnant / Lactating

1.100

1300

3000

400

600

4000

19-50 Years Old, Pregnant / Lactating

800

1000

2500

400

600

4000

Reference

9. Institute Of Medicine (IOM). Dietary reference Intakes for Calcium and Vitamin D. November 2010.