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Because of this and the fact that the body only needs a small amount of vitamin B12 each day, it can take up to a year or even longer for an inadequate vitamin B12 to manifest as an apparent deficiency
Avoid simultaneous use with strong acids or chelators (e.g., vitamin C or retinol serums) because they can inactivate copper peptides
Foods that are naturally rich in vitamin B12 include meat, poultry, fish, and dairy products
Athletes report being able to train harder more frequently without accumulating overuse injuries
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