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Metabolic rate decreases
GHK-Cu is a naturally occurring copper-binding peptide studied for its role in collagen synthesis, tissue regeneration, and gene expression regulation
In addition to its metabolic effects, GLP-1 acts centrally to maintain energy balance by activating glucagon-like peptide-1 receptors (GLP-1Rs) located in key regions of the brain
therefore, reduced serum IGF-I during fasting is due to decreased IGF-I production rather than increased IGF-I turnover [2]
Safety Considerations and Clinical Monitoring Safety is a central aspect of Retatrutide administration
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