Vitamin b 12 deficiency
(Cyanocobalamin Deficiency; Vitamin B12 Deficiency)

A nutritional condition produced by a deficiency of VITAMIN B 12 in the diet, characterized by megaloblastic anemia. Since vitamin B 12 is not present in plants, humans have obtained their supply from animal products, from multivitamin supplements in the form of pills, and as additives to food preparations. A wide variety of neuropsychiatric abnormalities is also seen in vitamin b 12 deficiency and appears to be due to an undefined defect involving myelin synthesis. (From Cecil Textbook of medicine, 19th ed, p848)


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One of the eight <b>B vitamins</b>,
One of the eight B vitamins,

<b>Vitamin B 12</b> also plays an
Vitamin B 12 also plays an

<b>Vitamin B12 Deficiency</b>
Vitamin B12 Deficiency

<b>Vitamin B12 deficiencies</b> often
Vitamin B12 deficiencies often

<b>Vitamin B</b>-<b>12 deficiency</b>
Vitamin B-12 deficiency

<b>Vitamin B12</b> absorption and
Vitamin B12 absorption and

<b>Vitamin B12</b> source
Vitamin B12 source

<b>Vitamin B</b>-<b>12 Deficiency</b> and
Vitamin B-12 Deficiency and

Diagnosis and therapies



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Schilling rudderSchilling & GraebnerSpiezer SchillingMethylmalonic acidPavel SchillingSchilling of SolothurnA. Schilling & CompanySchillingsAustrian schillingDiebold Schilling the Younger

More information

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  • MeSH - Medical Subject Headings.
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Last update: April 2009