Most adults need 2.4 mcg per day, but vegetarians, vegans, masters athletes over 50, and high-volume endurance athletes are at elevated deficiency risk
The practical conclusion: for most people with mild low B12 or dietary gaps, daily methylcobalamin in a quality multivitamin is a better long-term strategy than chasing energy shots
Vitamin B12 deficiency in over 16s: diagnosis and management (NG239)
Role of Vitamin B12 in the Body Vitamin B12 is a water-soluble vitamin belonging to the B vitamin group and plays several important roles in the body, including: DNA Synthesis: It is involved in the synthesis of DNA, making it crucial for cell division and reproduction
doi: 10.1200/jco.2017.72.7735
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