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Weight management medications, especially the newer generation of incretin mimetics (primarily glucagon-like peptide-1 [GLP-1]–receptor agonists), can be highly effective, but evidence to date suggests that patients who stop these medications regain weight. In this meta-analysis, researchers evaluated 37 trials of obesity medications that involved 9000 participants with an average follow-up of 32 weeks after medication cessation.
Average weight loss during treatment was ≈8 kg. After discontinuation, weight regain occurred at a mean of 0.4 kg monthly, with a projected return to baseline weight at around 2 years (see ).
When looking only at studies of semaglutide and tirzepatide, the average weight loss was greater (≈1…