can glutathione kill cancer cells Human cancer-associated fibroblasts enhance levels and antagonize drug-induced prostate cell death Glutathione and Thioredoxin Antioxidant Pathways

We therefore reason from mechanism and animal models rather than from human numbers

Cell 14 (1), 7685 (2008)

B12 injections boost energy levels, improve mood, and support cognitive function

vitamin B-12 injections at 6 wk of age, higher vitamin B-12 and lower tHcy and MMA concentrations were noted up to age 4 mo, suggesting that marginal vitamin B-12 status may be observed in breast-fed infants whose mothers are presumably eating a Western diet (36)

Continuous GH receptor stimulation, as seen with exogenous recombinant human GH (rhGH), can downregulate receptors and impair GH signaling

Vitamin B12 is essential for life