Vitamin B12
Information about vitamin
Vitamin B12
It is indispensable for the formation from
red
globules and the corporal growth and regeneration of weaves. The
deficit
of this
vitamin
gives rise to the call "pernicious anemia" (pallor, fatigue, etc.
but
unlike other hidrosolubles vitamins it is accumulated in the
liver
, reason why it is necessary to be periods very prolonged without its contribution in the diet so that carenciales states take place. Requirements the minimum
B12
vitamin
, according to RDA the USA, are of 2 µg for the adult. During the
gestation
and the
lactancia
the necessities increase in about
a
2, 2 - 2, 6 µg.
The most important sources of this
vitamin
are the
origin
foods animal, for that reason in many occasions it affirms that
a
vegetarian diet can cause its
deficiency
. At the moment, one affirms that the
bacterial
flora
of our heavy
intestine
can produce it in sufficient amounts. In fact, this
deficiency
in strict vegetarians
has
been only detected who consume neither milky eggs nor and that suffer some type of
intestinal
upheaval. The
alcohol
consumption makes increase the necessities of this
vitamin
.
The
B12
vitamin
coming from the diet needs
a
complicated mechanism for its absorption. One is due to unite to
a
protein
secreted by the
stomach
(intrinsic factor) that allows its absorption in the
intestine
. By
genetic
causes, some people can have
problems
to produce this intrinsic factor and to suffer symptoms of
deficiency
.
Many prepared phamacists for the treatment of pains or inflammations of the nerves (sciatic and lumbagias) contain
vitamin
B12
, normally associate to the
B1
and
B6
.
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