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26 Serum B 12 , homocysteine, and methylmalonic acid (MMA) levels (box 2) are unreliable predictors of B 12 responsive neuropathy (neurological disorders that respond to B 12 supplementation)
BMJ 1985;290(6477):12545
Dietary Habits: Vegetarians, vegans, and individuals with restrictive diets may need regular B12 injections to maintain optimal levels
Oral supplements go through the digestive system, which slows absorption and limits how much your body can take in at one time
We are aware that some of the subjects may have had genetically low concentrations of transcobalamin I (TCI), which is now known to be a benign condition that most probably does not need medical treatment [17]
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