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It aids in maintaining healthy nerve cells and red blood cells and assists in the replication of DNA
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Though it is difficult to reach dangerous levels from food sources alone, taking high doses of B12 supplements could theoretically lead to toxicity and symptoms
Antibiotics Stomach surgery Gastrointestinal disorders such as atrophic gastritis, small intestinal resection or bypass, gluten enteropathy, Crohns disease, chronic pancreatitis, and malignancy
Timing is critical, so if you have excess B12 levels, get checked
Endocrinology, Diabetes & Metabolism, 2 (4), e00082
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