common side effects of b12 injections Shots And How To Treat Them Understanding the B12 Vitamin Shot:

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Neurological changes A lack of vitamin B12 can cause neurological problems, which affect your nervous system, such as: vision problems memory loss pins and needles loss of physical co-ordination (ataxia), which can affect your whole body and cause difficulty speaking or walking damage to parts of the nervous system (peripheral neuropathy), particularly in the legs If neurological problems do develop, they can sometimes be irreversible

[DOI] [PMC free article] [PubMed] [Google Scholar] 52.Shi, B

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Similarly, inhibition of CD38 in aged mice boosted NAD + levels, improving exercise capacity, but in this case, no significant changes in mitochondrial biogenesis-related genes were observed 138