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Key Points Genetics probably plays a part in GLP-1 response, but it is not the main practical explanation in most cases A new Nature paper found GLP1R and GIPR variants associated with efficacy and side effects, but effect sizes are modest Non-genetic factors drug choice, dose, duration, sex, diabetes status still explain more variation than genetics Current evidence does not justify routine genetic testing before prescribing semaglutide or tirzepatide Most apparent non-responders have correctable clinical reasons for poor response If you are wondering why GLP-1 drugs work better for some people , the short answer is this: genetics probably plays a part, but it is not the main practical explanation in most cases

It also causes fluid retention, which adds weight that isnt fat but shows up on the scale and can be discouraging during weight loss attempts

From a diagnostic perspective, GDF-15's performance in detecting advanced fibrosis in MASLD further supports its clinical applicability beyond traditional liver enzymes, which are often normal in early disease (149)

Verify tesamorelin contains the full 44-residue GHRH sequence