Vitamin B12:
Vital Nutrient for Good Health

By Sally Fallon and Mary G. Enig, PhD

This article is full of great information on vitamin B 12. It covers the function of this key micronutrient, its absorbtion, how to test for a deficiency in B 12, as well as is effects on againg and other diseases.

One of the most important nutrients we get from animal foods is vitamin B12. The vitamin is also the largest known biomolecule and the only nutrient with a stable carbon-metal bond. One molecule of cobalt lies at the center of each B12 molecule, which has the approximate (and awesome!) chemical formula of C61-64H84-90N14O13-14PCo. Isolated B12 is a crystalline compound with a bright red color, due to the presence of cobalt. One practitioner has referred to B12 as "those ruddy drops that cheer sad hearts and strengthen faint hearts."¹

Vitamin B12 works with folic acid in many body processes including synthesis of DNA, red blood cells and the insulation sheath (the myelin sheath) that surrounds nerve cells and facilitates the conduction of signals in the nervous system. Severe depletion manifests as pernicious anemia, which was invariably fatal until the discovery of B12 in liver. But long before anemia sets in, other conditions may manifest, most often neurological problems (numbness, pins and needles sensations, a burning feeling in the feet, shaking, muscle fatigue, sleep disorders, memory loss, irrational anger, impaired mental function and Alzheimer’s) or psychological conditions (dementia, depression, psychosis and obsessive-compulsive behavior). President Kennedy has been quoted as having said he would never have become president without injections of B12.²

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