Unlike prescription GLP-1 receptor agonists such as semaglutide (Ozempic, Wegovy) or tirzepatide (Mounjaro for type 2 diabetes, Zepbound for obesity)which is actually a dual GIP/GLP-1 receptor agonistthese probiotic formulations contain specific bacterial strains, most commonly Lactobacillus and Bifidobacterium species, that manufacturers claim may stimulate endogenous GLP-1 secretion from intestinal L-cells
These include: Vegetarians and vegans, as vitamin B12 is mainly found in animal products Older adults, as they absorb vitamin B12 less well with age People with gastrointestinal disorders, like celiac disease or Crohns disease, which can block vitamin B12 absorption Those taking certain medications, such as proton pump inhibitors or metformin, which can also block vitamin B12 absorption Its best to talk to a healthcare professional about whether you need vitamin B12 supplements
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All three studies appear in Alternative Therapies in Health and Medicine, a journal that does not carry the same peer review rigor as major medical journals