Though the link isnt well understood, scientists have linked the vitamin to serotonin and depression in people with a deficiency
Studies confirm 50% drops by midlife, linking to aging symptoms.[1][9] Restoring NAD+ has been shown in animal studies to improve lifespan and healthspan, with human trials indicating benefits in muscle function and cognitive performance
However, you will often have to pay co-pays or other fees at your doctors office, so it is important to talk to the injection provider before you arrange your first B12 shots
However, further research is required to confirm a direct link between vitamin B12 shots and these benefits
GHK-Cu (sister peptide) given by intraperitoneal injection at 0.2/2/20 micrograms/g in mice reduced pulmonary fibrosis via Nrf2/NF-kB/TGF-beta1-Smad2/3 demonstrates systemic-injection dosing of the copper-tripeptide class in animals, relevant to the injectable question but GHK-Cu, lung, mouse