Moreover, the vitamin helps your hair, nails and skin remain healthy. You can find B12 in four chemical compounds: methylcobalamin, hydroxocobalamin, adenosylcobalamin and cyanocobalamin.

Allergic reactions to vitamin B12 are rare, but real. The reason may sound strange ... Note that in all three molecules metal ions are coordinated - loosely held in the middle - of a structure that ...

Vitamin B12 Levels Association with Functional and Structural Biomarkers of Central Nervous System Injury in Older Adults. Annals of Neurology , 2025; DOI: 10.1002/ana.27200 Cite This Page : ...

Meeting the minimum requirement for vitamin B12, needed to make DNA, red blood cells and nerve tissue, may not actually be enough – particularly if you are older. It may even put you at risk for ...