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History [edit] Descriptions of deficiency effects [edit] Between 1849 and 1887, Thomas Addison described a case of pernicious anemia, William Osler and William Gardner first described a case of neuropathy, Hayem described large red cells in the peripheral blood in this condition, which he called "giant blood corpuscles" (now called macrocytes), Paul Ehrlich identified megaloblasts in the bone marrow, and Ludwig Lichtheim described a case of myelopathy
Treating a B12 deficiency may boost energy and mood, reduce stress and fatigue, and decrease symptoms of multiple conditions
Key takeaways Vitamin B12 shots are injections that a doctor may prescribe to treat a vitamin B12 deficiency
Mor, M., & Koren, E
May-Jun 01 2023;44(3):619-626
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