Evidence snapshot: The strongest human evidence comes from a 2-year randomized controlled trial in 65 healthy older adults (Nass et al., 2008, Annals of Internal Medicine) showing sustained GH/IGF-1 increases and preserved fat-free mass, plus an earlier short-term human polysomnography study on sleep (Copinschi et al., 1997, Neuroendocrinology, PMID 9349662)
Such alterations were depicted as remarkable portal congestion, periportal inflammatory infiltrate, and moderate hepatocyte necrosis (nuclear pyknosis, karyorrhexis, and karyolysis with cytoplasmic eosinophilia), whereas the CTRL group exhibited normal architecture of liver tissue
Protocol length varies based on injury severity
DIY serums made without professional preservative systems last just 1-2 weeks refrigerated, requiring small-batch preparation and frequent replacement
Pinto and Bartley found 80% higher activity of GPX in female rats compared to males [23]