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Shellfish also have B12, including clams, shrimp, and raw oysters
While some experience mild soreness at the site, it typically fades within 48 hours
However, it's important to consult with your healthcare provider to ensure you're not exceeding the recommended dosage
As we age, our stomachs produce less hydrochloric acid or stomach acid, which is needed to absorb B12
While the test focuses on peptide and metabolic genetic markers rather than B12-specific variants, it can reveal broader predispositions in genes like FTO and MC4R that relate to metabolic efficiency
May cause false elevations in urobilinogen tests 4
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