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 Vitamin
B12 is a water-soluble B vitamin. B12 is also known as cobalamin because
it contains cobalt. The form of B12 most commonly used in dietary
supplements is called cyanocobalamin. B12 is only produced by bacteria, so
it is only found in food products of animal origin and in some fermented
vegetable products such as tempeh and miso (fermented soybeans). B12 works
closely with Folic Acid to promote new cell formation and normal cell life
and function. Necessary for proper digestion, protein synthesis, and
carbohydrate metabolism. Vitamin B12 deficiencies have often been reported
in the elderly, and those who have had gastric surgery. Recently,
diminished B12 status has been identified as an additional risk factor for
breast cancer among post-menoplausal women.
In a large number of studies, supplementation with Vitamin B12
proved to inhibit certain types of auto-immune disorders. B12 has also
been shown to improve symptoms of neurologic disorders in the elderly,
leading to calls for an open clinical trial studying B12's effects on
Alzheimer's disease.
Recommended Dietary Allowances: Men = 6 mcg; Women = 4
mcg; Pregnant Women = 2.2 mcg
For those individuals at highest risk for vitamin B12
deficiency, strict vegetarians and elderly with reduced B12 absorption,
supplements are highly recommended. Most complete multivitamin supplements
will contain vitamin B12 at RDA or higher levels. Higher intakes from
specific B12 or B-complex products may be warranted for high risk
individuals.
IMPORTANCE:
- Helps in the formation & regeneration of red
blood cells, thus helping prevent anemia
- necessary for carbohydrate, fat & protein
metabolism
- maintains a healthy nervous system
- promotes growth in children
- increases energy
- needed for Calcium absorption
- Improves memory
- Promotes concentration
- Increases energy
- Reduces heart disease risk
DEFICIENCY SYMPTOMS:
- pernicious anemia
- poor appetite
- growth failure in children
- tiredness
- brain damage
- nervousness
- neuritis
- degeneration of spinal cord
- depression
- lack of balance
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