Peptides are trending in longevity and biohacking circles. But what does the science actually say? Some peptides have robust human clinical trials, while others are based only on animal studies or FOXO4 DRI improves spermatogenesis in aged mice through reducing senescence associated secretory phenotype secretion from Leydig cells ScienceDirect Michael Morelli Over the last 8 years, I've personally experimented with 100+ peptides, longevity compounds, mitochondrial therapies, hormone protocols, Instagram FOXO4 DRI Peptide: Benefits and Dosage PEP DOSE Assessment of senescence level in PDL9 cells after FOXO4 DRI treatment. Download Scientific Diagram