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Methione: An essential amino acid, meaning that it cannot be synthesized in the body
Biological age can be influenced by epigenetic factors, where lifestyle and interventions like NAD+ therapy can effectively "turn back the clock" at a molecular level
Women specific considerations Women generally require lower doses relative to body weight compared to men
When deficiency is suspected based on clinical features (fatigue, paraesthesia, cognitive changes) or risk factors (vegan diet, gastric surgery, certain medications), serum B12 measurement guides appropriate intervention
However, the progress is slow
Most antibiotics, methotrexate, and pyrimethamine invalidate folic acid and vitamin B12 diagnostic microbiological blood assays
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