A clinician can check additional markers to confirm how your body uses B12
Without available vitamin B12, you may experience severe and permanent neurological challenges, such as paralysis, numbness, and problems controlling your bodys movements
Certain factors may theoretically affect B12 absorption
However, there are some seafood options and fortified foods
The oral daily dose far exceeds the vitamin requirement because the normal transporter protein-mediated absorption is absent, leaving only very inefficient intestinal passive absorption
This distinction affects its chemistry, analytical testing, formulation and interpretation