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Optic nerve atrophy can worsen in patients whose methylcobalamin levels are already elevated
This may also result from the autoimmune attack on parietal cells of the stomach
The incidence, however, appears to increase with age
Nobody want to be responsible for another human stuck by a used needle
In addition, cobalamin is an enzyme co-factor required for the production of DNA
You can only get it naturally from animal products like meat and dairy
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