PMC Article PMC8337113
High levels of these biomarkers suggest B12 deficiency, even with normal serum B12
10.1289/ehp.8871 74 HadjiH.BouchemalK
Older Adults As we age, our ability to absorb B12 from food sources decreases
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Other Uses Compounded methylcobalamin injections and other forms of vitamin B12 injections like hydroxocobalamin and cyanocobalamin may also be prescribed for those with pernicious anemia, diabetes, neuropathy, heart disease, circadian rhythm sleep disorders, memory loss, depression, fatigue, AIDS, inflammatory bowel disease (IBD), Lyme disease, osteoporosis, tendonitis, psychiatric disorders, Alzheimers disease, liver and kidney disease, and asthma