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When deficiency is suspected based on clinical features (fatigue, paraesthesia, cognitive changes) or risk factors (vegan diet, gastric surgery, certain medications), serum B12 measurement guides appropriate intervention
They can develop slowly, mix with everyday discomfort, and often feel like something else, such as a stomach bug, stress-related fatigue, or just the normal result of eating less
GLP-1 and GIP actions have been associated in some work with lower markers of metabolic inflammation
These effects typically peak during the first few days after each dose increase and generally diminish over 1-2 weeks as the body adapts
General chapters: bacterial endotoxins test
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