I think you mean to promote angiogenesis, not necessarily cancer.
It can make tumors grow faster if existing, and not only malignant.
BPC-157 is a synthetic peptide known for its ability to strongly promote
angiogenesis (the formation of new blood vessels)
Angiogenesis—the creation of new blood vessels—does not create tumors on its own. Instead, it is only an issue if a tumor already exists. Tumors rely entirely on existing blood vessels for survival during their early, microscopic stages. Once a tumor reaches a certain size (typically about 1 to 2 millimeters), it triggers the "angiogenic switch," causing new blood vessels to sprout and feed it with necessary oxygen and nutrients. This vascular network is what allows the tumor to grow rapidly and enables cancer cells to spread (metastasize) to other parts of the body. [
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