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 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence "BPC 157 causes canc*r.???" Here's what the science actually says. , The concept it promotes angiogenesis, and tumors need blood vessels to grow. Seems logical., But BPC 157 isn't a blind BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence BPC 157 Therapy: Targeting Angiogenesis and Nitric Oxide's Cytotoxic and Damaging Actions, but Maintaining, Promoting, or Recovering Their Essential Protective Functions. Comment on Jzwiak et al Rowan Paul, M.D.