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Factoring in Other Health Conditions Certain health conditions can directly interfere with your bodys ability to absorb vitamin B12 from food
Liver function tests (AST, ALT, bilirubin) and kidney function tests (creatinine, eGFR)
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This symptom occurs because the vitamin plays a In the nervous system, vitamin B12 helps produce a substance called myelin that shields the nerves and helps them transmit sensations
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