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B12 deficiency is especially common among: Adults over 50 Vegans and vegetarians People with GI issues like IBS or celiac disease Anyone on medications that interfere with absorption (e.g., metformin, antacids) This makes B12 injections an appealing option because they go straight into your bloodstream, bypassing any absorption barriers

Proposed mechanisms include fibroblast migration and proliferation, modulation of growth-factor signalingincluding EGF and VEGFand changes in reticulin and collagen-fiber formation at injury sites

That number changes everything about how this peptide can be used

Follow-up labs are typically scheduled at six weeks to confirm response, then quarterly