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Description
An individual becomes deficient when they are not consuming enough vitamin B12-rich foods or they are unable to absorb sufficient vitamin b12

doi: 10.1111/dme.13823 40 Modan-MosesDKorenIMazor-AronovitchKPinhas-HamielOLandauH

Sheller MR, Crowther RS, Kinney JH, Yang J, Di Jorio S, Breunig T, et al

more impressively, between 2014 and 2017, 17% of new chemical entities with FDA-approval have been prodrugs [1]
