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The overall quality of evidence for this outcome was low due to serious imprecision (low number of trials and participants)

For example, with folate (vitamin B9), plasma or serum concentrations reflect short-term dietary changes and may be affected by recent meals, which isn't ideal for detecting deficiency

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Manufactured under controlled conditions to ensure molecular integrity, analytical consistency, and batch-to-batch reliability

NNMT is studied as a regulator of how cells handle energy substrates and methyl-group transfer

In this case, your healthcare provider will recommend supplementation to help get your level where it should be