VITAMIN B12 (Cyanocobalamin)
General Description:
- cobalamin or cyanocobalamin (the ''red'' vitamin)
- although many doctors, nutritionists, and books will say that B12 is only found in animal
products this is false because it naturally occurs in a type of blue-green algae called
Spirulina
- you require only a few micrograms each day
- blood contains only about 5 nanograms (billionths of a gram) per liter, which represents
less than one part per trillion of bodyweight
- if you lack that miniscule amount it leads to pernicious anemia, which gradually destroys
the myelin sheath of the nerves, leading to blindness, insanity, and death
- 5,6-dimethylbenzimidazolyl cobamide is a coenzyme and the form of B12 that the body
uses
- the dibencoside form of the vitamin is an expensive form of the vitamin, but the body
efficiently converts 5,6-methylbenzidazolyl cobamide to dibencoside in the body, so there
is no need to take the expensive form
Actions:
- forms part of the coenzymes essential for all cells, particularily rapid turnover cells,
the lining of the digestive tract, and bone marrow cells
- guarded preciously by the body, B12 is called upon to do it's work and then reabsorbed
- has a role in treating pernicious anemia
- versatile vitamin that serves as an ''ingredient'' used to manufacture blood and other
body cells, as well as covering nerve fibers, helping to metabolize carbohydrates and fats
- improves memory, ability to reason and concentrate, dispels mental disturbances, prevents
mental deterioration, and makes you feel younger
- may help one recover faster from viral and/or bacterial diseases
- promotes growth in children and is involved in many vital metabolic and enzymatic processes
- essential for production and regeneration of RBCs
Deficiency:
- RDA is only 2 mcg.
- average intake in America is 8 mcg./day for men and 5 mcg. for women
- 3 mcg./day is sufficient to offset B12 deficiency
- B12 is absorbed principally in the stomach with the aid of what is called the intrinsic
factor
- without the intrinsic factor the body is unable to absorb B12 and this can lead to pernicious
anemia
- heavy use of alcohol can have serious effects on B12 nutrition
- Alzheimer's disease may be caused by B12 deficiency
- deficiency of B12 may lower blood level of protein necessary for bone formation
- deficiency is associated with an impaired ability to produce phagocytes to kill the
tubercle bacillus (TB), HIV infection, and depression
- symptoms: poor appetite and growth in children, chronic fatigue, sore mouth, feeling
of numbness or stiffness, loss of mental energy, difficulty in concentrating, and osteoporosis
Interactions and Toxicity:
- even at 10,000 times the RDA it appears non-toxic
- vitamin B12 does not interfere with the action of any drugs but many drugs interfere
with B12 nutrition: anticonvulsants, antituberculosis, cholesterol-lowering, anticancer,
and antigout drugs to name a few.
- B12 can also mask the signs of folate deficiency at higher doses (10mcg. or more)
- B6 must be present in adequate amounts for the body to absorb B12
Sources:
- nutritional yeast, milk, eggs, aged cheese, fortified brewer's yeast, sunflower seeds, comfrey leaves,
kelp, bananas, peanuts, concord grapes, raw wheat germ, pollen