Should You Try MOTS c and BPC 157 Longevity Peptides? Separating Truth from Hype with Human Data Studies Peptides like BPC 157 are everywhere on social media right now. They are most commonly promoted for injury and tendon healing and are often paired with other peptides such as TB 500. Dr. TLDR: BPC 157 has not been proven to cause cancer. But it has also not been proven safe in people with active cancer, recent cancer, premalignant conditions, suspicious lesions, or high Peptide Therapy for Inflammation: A New Solution BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence