doi: 10.1016/j.jiph.2019.11.003 253 YangI
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Behavioural Pharmacology
A widely referenced review reports that GHK-Cu raises growth factors such as VEGF and is associated with larger follicles and better hair-transplant survival, though its author has a commercial affiliation, so it should be read as a mechanistic review rather than clinical proof (Pickart, 2008, DOI)
Mehranjani MS, Noorafshan A, Momeni HR, Abnosi MH, Mahmoodi M, Anvari M, et al
It stimulates POMC neurons (which suppress appetite) and inhibits NPY/AgRP neurons (which stimulate hunger)