Peptide Science Basics: Evidence-First Education on Peptides and Health

Key Takeaways Ipamorelin and CJC-1295 are both growth hormone secretagogues, meaning they signal the pituitary gland to release more of the body's own growth hormone, but they work through two distinct receptor pathways. CJC-1295 mimics growth hormone-releasing hormone (GHRH) and extends the amplitude and duration of GH pulses; Ipamorelin mimics ghrelin and triggers GH pulse initiation with high receptor selectivity. The single human pharmacokinetic study on CJC-1295, publish

Key Takeaways GHK-Cu is a naturally occurring copper-binding tripeptide with one of the largest bodies of published research among ‘longevity’ peptides, including decades of work on collagen synthesis, wound healing, and antioxidant activity. Topical GHK-Cu (often listed as ‘copper tripeptide-1’ on ingredient labels) is regulated as a cosmetic ingredient in the U.S. and is widely used in commercial serums and creams without requiring FDA pre-approval. Injectable GHK-Cu is a c

Clinical biohacking is going mainstream in 2026. Here’s what current longevity research actually shows about peptides—and what’s still unproven. Key Takeaways Biohacking is shifting in 2026 from an elite, unregulated subculture toward evidence-based, physician-guided "clinical biohacking"—a convergence of longevity science, functional medicine, and preventive care. Peptides are one of the most discussed tools in this shift, but the evidence base varies enormously by peptide:

Peptides are widely discussed for longevity and athletic performance, but the evidence base is far thinner than most marketing suggests. Most of the striking results—lifespan extension, dramatic muscle gains—come from animal or cell studies, not controlled human trials. This overview separates what current 2026 research actually supports from what remains speculative. Key Takeaways Peptides are short amino acid chains that influence cell signaling, hormone release, and tissue