where should you inject a b12 shot Best Vitamin Injection Sites Best Vitamin B12 Injection Site:

SIRT3 overexpression inhibits growth of kidney tumor cells and enhances mitochondrial biogenesis

This helps make more healthy red blood cells

Abels, Improved distribution analysis of cobalamins and cobalamin analogues in human plasma in which the use of thiol-blocking agents is a prerequisite, Clinica Chimica Acta, Volume 131, Issue 3, 15 July 1983, Pages 211-224, ISSN 0009-8981 Thakkar, K., & Billa, G

In advanced liver disease, serum B12 levels can appear misleadingly normal or even elevated due to increased binding proteins and reduced clearance, despite actual tissue deficiency

Additionally, some individuals may have genetic variations in AMPK or NNMT expression that reduce responsiveness to these compounds, though this is less common