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You take metformin or a proton pump inhibitor, which can deplete B12 over time
This includes: Pernicious anemia Crohns disease or celiac disease Gastric surgery or gastrointestinal disorders For mild deficiency, starting with 1,000 mcg of Vitamin B12 weekly is common
Metagenomic biomarker discovery and explanation (in Eng)
Its essential to understand the potential side effects that come with this popular supplement
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