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Is the 31.2% gene effect safe
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Many nutrients have their action INSIDE the cell, which means that testing serum and blood levels just give us an indication of what may be available but that is assuming everything else is working properly: cellular activity, enzyme activity, receptor activity, etc
However, high B12 levels in the blood can be a sign of underlying kidney or liver disease, indicating that these organs are struggling to get rid of excess B12
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