Long post, sorry. GHK-Cu: what actually has human evidence behind it, and what is extrapolation from animals?
My rule now: if a claim cannot survive being written down with the numbers attached, it is marketing.
Sample size, blinding, and who paid for it. Those three questions kill most of the confidence in most of these threads.
The comparison group matters more than the compound when the outcome is something as fuzzy as focus.
Animal data is much of what exists here and the human stuff is thin and small.
Anyone got a paper worth reading on this rather than a write-up of a paper?
Where does the human data stop and the extrapolation begin? That is the whole thread.
Underdosing and tolerance are indistinguishable from the inside, and everyone picks the flattering explanation.
Is a baseline blood test really necessary before starting something like this?