Weight loss can include absolute lean-mass loss.
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Across seven randomized GLP-1 trials representing 821 adults, absolute lean mass decreased by 1.74 kg overall—even as lean mass became a larger share of total body weight.
Lean mass includes more than skeletal muscle, and results were highly variable. This does not show that Muscle + Hydration prevents muscle loss.
Laverde et al. Int J Obes. DOI: 10.1038/s41366-026-02118-y.
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