KnowraVitamin B12 deficiencyLinked fromLinked fromThe 21 pages that link to Vitamin B12 deficiency, each with the reason it gives.All 21Broader topic 1Related 12Narrower topic 2Compared with 6Intrinsic factorNarrower topic: Loss of intrinsic-factor-mediated uptake is a major cause of this deficiency.CyanocobalaminNarrower topic: Preventing and correcting this deficiency is cyanocobalamin’s primary clinical purpose.