Semaglutide has moved beyond its original indication and now sits at the center of a widening set of clinical questions: cardiovascular risk, kidney disease progression, and even neurodegeneration. The question is no longer whether the drug lowers glucose or reduces weight—it does—but how far those effects extend across systems, and whether evidence from one population can be translated into another without distortion. Large, well-powered trials have produced consistent signals, yet those signals are now being applied in contexts that were...