keshan disease glutathione peroxidase The Role of Peroxidase-1 in Health and The association between selenium deficiency
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It is also not advisable not to use Vitamin B12 injection if there are allergies to cobalt or if a person has Lebers disease

doi:10.1002/jcb.10358

Polygonatum Sibiricum polysaccharide ameliorates Alzheimer's disease by alleviating cuproptosis and activating the PI3K/AKT signaling pathway

Also, if you have a chronic condition that you believe may be impacting your B12 levels, again, discuss this with your GP

Griffiths, E
