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The tradeoff is the trip itself, though many patients combine a B12 shot with other errands or with a blood test or a physical
Levels decline with age, which is one reason researchers are studying exogenous administration as a longevity intervention
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Endogenous causes (medical conditions) When B12 is elevated without supplementation , it can indicate that the body is releasing stored B12 from damaged tissues, producing excess B12-binding proteins, or failing to clear B12 normally
Peptides can interact through disulfide bond formation, aggregation, or pH-mediated precipitation, particularly when mixing sequences with differing isoelectric points
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