ghk-cu clinical trial skin anti-aging randomized Epigenetic mechanisms activated by increase collagen density in Reducing Redness & Inflammation with
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[DOI] [PubMed] [Google Scholar] 29.World Health Organization

[PubMed: 2161554] 242

And he's the guy that Wired magazine, I think way back in 2013, originally did the article on

Clinical trial data from the SURMOUNT-1 study showed that gastrointestinal adverse events were significantly more common during dose escalation periods (Jastreboff et al., 2022, NEJM)

leaky gut syndrome as a catch-all diagnosis is debated
