What Are the Symptoms of Vitamin B12 Deficiency?

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The symptoms of Vitamin B12 deficiency include things like memory loss, severe persistent fatigue almost like feeling as inability to get through the day. Now I know many of you right now are probably already thinking oh my gosh I have Vitamin B 12 deficiency. Other symptoms that tingling in the extremities, tingling in your fingers, tingling in your feet that doesn't go away and lastly if you look at your tongue, highly inflamed red tongue with a cracked surface can also be a physical symptom of vitamin B12 deficiency.