where b12 injections are given Vitamin Shots Right for You? How to self-inject intramuscular vitamin
Description
Use the thumb and forefinger of the non-injection hand to hold skin of injection site tight

Endocrinology 148 (10), 46584666

Two practical consequences fall out of this mechanism, and both explain the shape of the protocol below
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The result is a vicious cycle where declining NAD+ leads to worse metabolic function, which can lead to weight gain, which increases NNMT activity further
