Definitions for vitamin b 12 deficiency

This page provides all possible meanings and translations of the word vitamin b 12 deficiency

U.S. National Library of MedicineRate this definition:(0.00 / 0 votes)

  1. Vitamin B 12 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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