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Understanding When Elevated B12 Requires Investigation In individuals who are not supplementing, elevated B12 levels can sometimes point to underlying health issues such as liver disease, certain blood disorders, or kidney disease

Cyanocobalamin should not be given before a diagnosis has been fully established because of the possibility of masking symptoms of subacute degeneration of the spinal cord

Rather than directly supplying NAD+ precursors (like NMN or NR), it works by blocking an enzyme that consumes nicotinamide, theoretically preserving the substrate pool for endogenous NAD+ production

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(Which Tests To Take) Here are the tests to take when determining ones cellular B12 levels