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The IGF 1 Trade Off: Performance vs. Longevity Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy PMC Can peptides like sermorelin, IGF 1 LR3, and GHS boost muscle growth? Maybe. Are they safe? We don't know. These compounds boost natural growth hormone (GH) and IGF 1 levels, key drivers of muscle Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy
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