results b12 injections High B12 Levels in Blood:
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At the moment, its only used for RESEARCH

doi:10.1016/j.jgr.2020.02.004

Intriguingly, another interesting research lead to the discovery of a differential role for IRSs in apoptosis, suggesting an antiapoptotic effect for IRS-2 [122] which is consistent with known differential roles of IGF-1 and insulin

Pernicious anemia: Autoimmune destruction of gastric parietal cells, leading to decreased intrinsic factor production, essential for B12 absorption
