Enhanced Immune Function : By supporting the production of healthy red blood cells, B12 injections can strengthen your immune system, helping your body fight off illness more effectively
doi:10.4061/2010/876940
Full therapeutic doses are a separate and more promising story, now in trials for depression and, as covered above, in an early test in Parkinsons
The hair-growth interest comes from a line of animal research: T4 was shown to increase hair growth in rats and mice by activating hair-follicle stem cells in the bulge region, per PubMed (Philp et al., 2003, DOI), with follow-up work showing faster regrowth in T4-overexpressing mice and slower regrowth in knockout mice via VEGF and P38/ERK/AKT signalling (Gao et al., 2015, DOI)
C., Luna, A
Degradation can lead to reduced potency, contamination, or harmful by-products