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Keywords: intrinsic factor deficiency, iron deficiency, mixed anemia, macrocytic anemia, orthoblastic anemia, total gastrectomy, vitamin b12 deficiency Introduction There are many vitamins that support the vital activities of the human body, and vitamin B12 is one of them

James SJ, Cutler P, Melnyk S, Jernigan S, Janak L, Gaylor DW, Neubrander JA

Cognitive Impairment: B12 deficiency may contribute to cognitive issues, including memory loss, difficulty concentrating, and mood changes

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