Nutritional anemias with especial reference to vitamin B12

B12 Lack (“Pernicious Anaemia”), Possibly Caused by “Parasitization” (Consumption by a Neoplasm), in a Case of Waldenström's Macroglobulinaemia

“…Almost all patients described were food faddists or very strict vegetarians, mostly vegans; they were much younger than our patient (3, 6, 19,20,22). Moreover, cyanocobalamin deficiency in such cases usually causes combined degeneration of the spinal cord rather than anaemia (5,25); possibly a normal intake of folk acid prevents anaemia.…”