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Note that our body is not very efficient at absorbing vitamin B12 from supplements, so it's better to stay on the safe side by aiming to consume well over the minimum recommended amount, rather than taking a little less or sticking to the RDI

Deficiency after LAGB is primarily driven by reduced intake of B12-rich foods and use of acid-suppressing medicines such as PPIs or H2RAs

If medication has failed for postherpetic neuralgia, is an intervention necessary, or can a better medication combination still help

Further studies are needed to confirm the lower B12 levels in relation to obesity or semaglutide use, and their effect when combined with GLP-1 drugs