does ghk-cu develop tolerance or lose effectiveness over time with Semaglutide: Stacking Guide Frontiers | Exploring the beneficial

Clinical bottom line for GLP-1 agonists in PCOS Clearly benefits: Women with PCOS and insulin resistance and/or overweight/obesity specifically for improving cycle regularity, reducing hyperandrogenism, supporting sustained weight loss, and reducing long-term cardiometabolic risk

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10.1038/373699a0 Nature 118 SchmidtL.JunkerK.NakaigawaN.KinjerskiT.WeirichG.MillerM.et al (1999)

For the research context the article is key for understanding why the amylin + GLP-1 combination makes mechanistic sense

Conversely, in a study of non-cancerous cells, GHK appeared to promote the growth of NIH-3T3 fibroblasts, which are healthy cells often used as a standard model to examine cell division and growth