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Finally, one very recent study in the USA has demonstrated that in some individuals with neurological symptoms, the presence in the blood of antibodies against this receptor may interfere with the proper uptake of B12 into the brain
Li Q, Han X, Lan X, Gao Y, Wan J, Durham F, et al
Most healthy adults have a heavy store (up to several years worth) of B12 in their liver
Both peptides need more robust human studies to determine their safety profiles and long-term effectiveness
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