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Nutritional
Folate
Vitamin B9 — critical for DNA methylation, cell division, and homocysteine metabolism.
Optimal Range
> 10 ng/mL (optimal) · 3-20 ng/mL (lab range)
Why It Matters
Folate is essential for proper DNA methylation — a key epigenetic process that regulates gene expression and aging. Deficiency elevates homocysteine and impairs cellular repair. MTHFR gene variants affect folate metabolism in ~40% of the population.