Vitamin B12 Deficiency Symptoms - Good Information on Preventing Them

Pernicious anemia is the principal of Vitamin B12 deficiency symptoms. But normally before this symptom is observed, deficiency will have already affected the brain and nervous system.

Vitamin B-12 is an interesting vitamin and important in many functions including creation of DNA.

This is the only vitamin that contains elements of essential minerals. Cobalt, essential for longevity, makes it dark red in colour.

Vitamin B12 benefits are considerable; some are shown below.

• water-soluble

• with folic acid works in cell division (creation of new cells)

• essential for normal nerve tissue metabolism

• helps iron function

• helps folic acid synthesize choline

• aids absorption of Vitamin A – B12 converts beta-carotene to A

• helps make RNA and DNA

• highest concentration found in parts of body linked to red blood cell creation: kidneys, heart, brain, pancreas, blood, bone marrow and testes

• reportedly, deficiency is widespread because of problems with absorption

• can take up to 5 years to be come deficient – important to know for those switching to vegetarianism

• because the best sources are meat proteins, getting B12 can be problematic for vegetarians – egg products are helpful


• Adults 2.4 mcg/day

• Teens 2.4 mcg/day

• Children 1-4 years 0.9 mcg/day; 4+ years 1.2 mcg/day

Vitamin B12 Dosage by Supplements

Minimal amounts are required – note these dosages are all in micrograms:

• Adults maximum: 200 mcg/day

• Teens maximum: 60 mcg/ day

• Children maximum: 1- 4 years 6 mcg/day; 4+ 12 mcg/day

Vitamin B12 Toxicity

Minimal amounts required. No toxicity reported but minimal amounts required.

More Information

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