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Vitamin B12 is essential for red blood cell production and DNA synthesis
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Absent intrinsic factor is often associated with a condition called atrophic gastritis, a thinning of the lining of the stomach
Others add B12 later, once the dose has stabilized
R., & Park, G
If B12 levels were low to begin with, longer-term benefits like red blood cell production or nervous system support may take several weeks
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