Vitamin B12 (also known as
cobalamin) is a large and complex molecule that
has a tetrapyrrole ring that binds to cobalt, an
essential human micronutrient. We do not
produce Vitamin B12, it is produced by
certain microrganisms. We therefore depend on
microbes for our daily cobalamin supply; we get
5-30 micrograms from the food we eat, and a small
amount is produced by the microbes that live in
our intestines. A normal human has 2-5 mg of
Vitamin B12 in the body, most of it
is in the liver and kidneys. The amount of
cobalamin required to maintain normal levels is
2-5 micrograms per day and if we do not get
vitamin B12, deficiency symptoms will
develop after several years. Cobalamin deficiency
leads to neurological abnormalities and anemia.
Therefore, vitamin B12 appears to be
important for brain function and blood
production. Researchers are still
investigating exactly how vitamin B12
works at the cellular level.
I hope that helps.
Click Here to return to the search form.