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Likely related to rapid NAD+ elevation and downstream effects on cellular energetics

How is it that something I thought was good for my body could betray me like that
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Modern diets, stress, gut issues, and even medications like metformin or antacids can interfere with B12 absorption leaving your body depleted, even if your blood test is normal. What does B12 deficiency feel like

B12 isn't a magic bullet

Mast cells can also be studied in situ, directly in living immunocompetent skin models
