What Are Peptides — And Why Longevity Doctors Are Obsessed

Peptides are not supplements — they are precise signalling molecules your body already makes, and their decline after 30 is one of the most underappreciated drivers of how you age. Over 7,000 naturally occurring peptides exist in the human body. Some, like insulin, you already know. Others — BPC-157, TB-500, CJC-1295 — are being studied by longevity researchers precisely because they mimic the body's own repair signals.