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Slow dose escalation is the primary tool for managing GI discomfort
But if you take B12 supplements, you risk ingesting more B12 than you actually need
If all radioactivity is excreted, the patient is unable to absorb B12, while a low fecal excretion of the radioactive B12 indicates that some of the vitamin has been absorbed
As such, it is involved in many biological processes, including the breakdown of fats, the reduction of serum cholesterol, serotonin activity modulation, gene expression, and insulin signal transduction
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