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it contributes to the formation of the protective covering around nerves, known as the myelin sheath, and its deficiency can cause neurological issues like numbness and tingling in the hands and feet

Why Vitamin B12 Is Important Though it may take years for deficiency to develop in those starting out with adequate stores of vitamin B12, the results of B12 deficiency may include a magnitude of devastating physical and psychiatric symptoms, including death

Are other factors contributing

For treating a deficiency, injections are usually given frequently at the start, for example, several times per week or every other day for a couple of weeks, to quickly build up body stores

The decision to get B12 injections should be guided by lab results, honest risk-benefit discussions with a qualified provider, and clarity about whether you are treating a diagnosed deficiency or pursuing an elective wellness service