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Without biomarkers, you cant tell a working intervention from an expensive placebo

[DOI] [PMC free article] [PubMed] [Google Scholar] 226.Martin TJ, Moseley JM, Gillespie MT

This might sound high compared to the NIH's Recommended Dietary Allowance of just 2.4 mcg daily for adults, but don't worry the injection method allows for safe delivery of these higher doses, and B12 is water-soluble, meaning your body efficiently eliminates any excess

Continued use of the arm during daily activities prevents complete rest

Tassorelli, C

RQ = 2 Ct [35]