BPC 157: Miracle Healing Peptide or Hidden Danger? Most people who train hard are solving the wrong problem. The problem is not effort. It is recovery. Your body does not get stronger during training. It gets stronger during the recovery BPC 157 For Knee Pain: Early Reported Outcomes, A report on intra articular BPC 157 for knee pain described high rates of improvement: ~92% with BPC 157 alone, ~75% when combined with thymosin beta 4, BPC 157 and Healing Peptides: Hype or Hope? A Doctor's Comprehensive Perspective MSK Doctor Zaid Matti 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