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,
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Introduction-<b>B12</b>  <b>Vitamin</b>

Introduction-B12Vitamin
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<b>deficient</b> in <b>vitamin B12</b>.

deficient in vitamin B12.
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Causes of <b>Vit B12 deficiency</b>-2

Causes of Vit B12 deficiency-2
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NUTRITIONAL DISORDERS

NUTRITIONAL DISORDERS
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<b>Vitamin B12 deficiency</b>: Causes

Vitamin B12 deficiency: Causes
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Last update: September 2014