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TABLE F-2 Adequate Intake (AI) for Vitamin D

Life Stage Group

AI (μg/d)

Basis for AI

0–6 mo

5

Serum 25(OH)Db level

7–12 mo

5

Serum 25(OH)D level

1–3 y

4–8 y

9–13 y

14–18 y

5

Serum 25(OH)D level

19–50 y

5

Serum 25(OH)D level

51–70 y

10

Serum 25(OH)D level

>70 y

15

Serum 25(OH)D level

Pregnancy and lactation, all ages

5

Serum 25(OH)D level

a Unless noted otherwise, all studies were performed in the United States or Canada.

b 25 (OH)D = 25-hydroxyvitamin D.



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