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Many clinicians start with serum B12, and may add markers such as methylmalonic acid and homocysteine when results are borderline or symptoms are strong
Preferred for patients with MTHFR mutations (which are common in the general population) and for patients who want the most directly usable form
The FDA-approved label tells doctors to recheck B12 every two to three years while someone stays on the drug
Elevated NAD+ levels increase the basal metabolic rate, enhance mitochondrial biogenesis, and shift the bodys metabolism away from fat storage and toward fat utilization
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