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Recommended Dietary Allowance for vitamin B12 for adults
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Vitamins

Vitamins Health Tips & Ideas

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The Recommended Dietary Allowance (RDA) is the average daily dietary intake level that is sufficient to meet the nutrient requirements of nearly all (97 to 98 percent) healthy individuals in each life-stage and gender group. The RDAs for vitamin B12 (in micrograms) for adults are:

Life-Stage Men Women Pregnancy Lactation
Ages 19+ 2.4 mcg 2.4 mcg    
All ages     2.6 mcg 2.8 mcg

 

 

 
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Vitamins, health tips and ideas

Vitamin A: What is it? 
What foods provide vitamin A?
What is the Recommended Dietary Allowance for vitamin A?
When can vitamin A deficiency occur?
What is the association between vitamin A, beta carotene and cancer?
Selected Food Sources of Vitamin A
Vitamin B6: What is it ?
What foods provide vitamin B6?
What is the Recommended Dietary Allowance for vitamin B6 for adults?
When can a vitamin B6 deficiency occur?
What is the relationship between vitamin B6, homocysteine, and heart disease?
Selected food sources of vitamin B6
Vitamin B12: What is it?
What foods provide vitamin B12?
What is the Recommended Dietary Allowance for vitamin B12 for adults?
When is a deficiency of vitamin B12 likely to occur?
What is the relationship between vitamin B12, homocysteine, and heart disease?
Selected Food Sources of Vitamin B12
Vitamin D: What is it?
What are the sources of vitamin D?
Is there a Recommended Dietary Allowance for vitamin D for adults?
When can vitamin D deficiency occur?
Selected Food Sources of Vitamin D
Vitamin E: What is it?
What foods provide vitamin E?
What is the Recommended Dietary Allowance for vitamin E for adults?
When can vitamin E deficiency occur?
Table of Selected Food Sources of vitamin E
Folate: What is it?
What foods provide folate?
When can folate deficiency occur?
Selected food sources of folate and folic acid
Iron: What is it?
What foods provide iron?
What is the Recommended Dietary Allowance for Iron
When can iron deficiency occur?
What is the Recommended Dietary Allowance for Iron
Magnesium: What is it?
What foods provide magnesium?
What is the Recommended Dietary Allowance for magnesium?
When can magnesium deficiency occur?
Selenium: What is it?
What foods provide selenium?
What is the Recommended Dietary Allowance for selenium for adults?
When can selenium deficiency occur?
Zinc: What is it?
What foods provide zinc?
What is the Recommended Dietary Allowance for zinc?
When can zinc deficiency occur?


 


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