Few topics in longevity medicine generate as much excitement — and as much confusion — as peptide therapy. Over the past decade, a growing body of research has highlighted the potential of bioactive peptides to modulate healing, inflammation, hormonal signaling, and cellular repair.
What Are Peptides?
Peptides are short chains of amino acids, typically fewer than 50 residues, that act as signaling molecules throughout the body. Unlike conventional pharmaceuticals that block or activate specific receptors, peptides generally work by mimicking or amplifying the body's own regulatory signals.
The Most Researched Peptides
BPC-157 (Body Protective Compound) has the most robust preclinical data, showing accelerated healing in tendons, gut mucosa, and neural tissue in animal models. TB-500 works primarily through actin regulation, promoting cell migration and tissue repair. CJC-1295 and Ipamorelin are growth hormone secretagogues that stimulate pulsatile GH release without the suppression associated with exogenous GH.
What the Evidence Actually Shows
It is important to note that most peptide research is preclinical. Human clinical trials are limited, partly due to regulatory constraints and partly due to the difficulty in funding studies on molecules that cannot be easily patented. This does not mean the evidence is weak — it means interpretation requires nuance.
Safety Considerations
Peptides have a generally favorable safety profile relative to many conventional medications, but quality control in the compounding pharmacy space is a significant concern. Working with a qualified medical provider who sources from reputable pharmacies is essential.