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Vitamin B12, also known as cobalamin, is an essential water-soluble vitamin that plays a crucial role in: Red blood cell formation DNA synthesis Brain function and nerve health Converting food into energy When your B12 levels are low, you may experience fatigue, weakness, mood changes, or even memory issues

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Huang Y-Y, Lee Z-H, Chang K-C, Wu Z-Y, Lee C-C, Tsou M-H, Lin H-M