b12 injections causing joint pain Why does liquid vitamin cause aching? What You Need to Know

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doi:10.1016/s0004-9514(06)70026-5 Teixeira LJ, Valbuza JS, Prado GF

Blood tests can reveal anaemia, vitamin B12 levels and intrinsic factor antibodies

5-Amino-1MQ readily permeates the cell membrane to access cytosolic NNMT, MOTS-c engages intracellular targets and translocates to the nucleus, and NAD+ influences both extracellular receptors and intracellular enzymatic pathways

2018;13:e0192169

In fact, B12 is so potent a factor in cell maturation that some of the original studies on it showed that cells in the bone marrow (where blood is manufactured) when deliberately deprived of B12 could mature in just a few hours when B12 was added