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If you have symptoms of deficiency or risk factors such as metformin use, speak with your GP about appropriate testing and treatment
Several commercial weight loss clinics offer B12 injections as part of their programmes, but these are not evidence-based treatments, and any perceived benefit is likely attributable to other concurrent lifestyle changes
Collecting a living catalogue of investigational peptides, their hypothesized indications, mechanisms, and trial statuses will help clinicians, patients, and regulators track progress and identify areas for future research
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