Metabolic
Biomarker

Vitamin B12

Included in Essential Labs
Why we test it
Vitamin B12 builds myelin (nerve fiber coating), produces red blood cells, and clears inflammatory proteins from the brain. Even low normal levels are linked to brain shrinkage. Deficiency can cause irreversible nerve damage.
BetterBrain target
> 600 pg/mL (ideal > 800)
Standard labs flag only below 200 pg/mL. Brain shrinkage and cognitive decline are associated with levels well above that threshold.
What you Can do
  1. Methylated B12 supplementation
  2. B12-rich foods (organ meats
  3. shellfish
  4. eggs)
  5. Methylated B vitamins

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