Nedostatek vitaminu B12 v potravě se projevuje megaloblastickou anemií. Tento vitamin není přítomný v rostlinách, člověk ho přijímá v živočišné potravě, vitaminových preparátech a doplňcích stravy. Deficit vitaminu B 12 je také příčinou mnoha různých neuropsychiatrických abnormalit, pravděpodobně způsobených nedefinovanou poruchou syntézy myelinu.

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)

Anotace

coord IM with specific B 12 vitamin /defic (IM)

DUI

D014806 MeSH Prohlížeč

CUI

M0022796