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 BPC 157 has already hit the mainstream, but should it hit your bloodstream? 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