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Causes of B12 deficiency include, but are not limited to, poor nutrition, stomach and digestion problems, cancer, infections, and malnutrition
The importance of know the half-life helps with determining the frequency of drug administration
At appropriate levels, these lipotropic properties of vitamin B12 help your body metabolize fat more effectively and efficiently
What does not belong is an assay reported as milligrams of peptide, or a purity figure obtained by a peptide method
Castle later labeled the essential substance secreted by a normal stomach as intrinsic factor and the substance present in food as extrinsic factor. Subsequent studies showed that the intrinsic factor serves as an intestinal transport vehicle for the extrinsic factor (later identified as vitamin B12) (139)
