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The result is a significant boost in intracellular NAD+ levels, which in turn activates sirtuins (SIRT1) proteins known to regulate cellular health and metabolism

Some clients come in weekly, others monthly

However, persistently high serum B12 levels warrant medical investigation, as they may indicate liver disease, kidney dysfunction, or haematological disorders rather than simple overconsumption

However, MMA levels can be elevated in those with thyroid and kidney conditions, which limits the tests specificity (9, 10)

The clinical need must be considered in addition to any potential adverse outcomes for the infant