Detecting atrophic gastritis upon gastroscopy strongly supports the diagnosis, as does a positive finding of autoantibodies against intrinsic factor in a blood sample
People on a strict vegetarian or vegan diet or those with certain medical conditions may lack B12
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It works in conjunction with folate to help develop new cells and to support the function of existing cells (via a process called methylation)
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Vitamin B12 is a key vitamin for mood, energy, nervous system function, and more