5 (download XLSX Statistical source data for Fig
An overview table of included studies is available in the Supplementary Material (S1) and online with options to filter the database ( The table includes information on first author and year of publication (1), paper title (2), whether the study was included in the meta-analysis (3) or systematic review (4), a tag indicating whether ghrelin or GLP-1 was investigated (5), specification of the hormonal assessment and/or manipulation (i.e., whether plasma acyl-, desacyl-, total ghrelin, GLP-1 was measured, which substance was administered (if any)) (6), type of reward phase assessed during fMRI (7), type of reward (e.g., food, money, alcohol) (8), and sample population(s) (9)
Diamandis P, Sacher AG, Tyers M, Dirks PB
Use GHK-Cu if tolerability or skin reactivity is the limiting factor, or add it to a retinol regimen as a morning complement targeting dermal density and antioxidant support
Now available in the multi-dose KwikPen at the same self-pay price as the vial
Hutson WR, Roehrkasse RL, Wald A