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most other claimed benefits (bone density, body composition) trace back to animal studies or preliminary/anecdotal reports, not confirmed human efficacy trials

Ozempic does not actively deplete B12 or alter its absorption in the gut

Individuals may be genetically predisposed to an attenuated intestinal barrier either by the expression of abnormal structural components, for example, those involved in TJ protein complexes that modulate paracellular transport across the epithelium (Mu et al

Overall, B12 injections offer significant physical and mental health improvements

1,2,6,12 Dementia-like disease, including episodes of psychosis, is thought to be associated with more severe and chronic deficiency, although supporting evidence is poor