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Description
When cobalamin is low, it can lead to loss of appetite, weight loss, chronic diarrhea, anaemia, weakness, lethargy and neurological abnormalities

The fix is documentation discipline, not code avoidance

There are often large gaps between total B12 and active-B12 levels in the blood

It is designed to interact with and block the enzyme NNMT (Nicotinamide N-methyltransferase)
