I thought this might be right up your alley to discuss @Anthony Castore . I am seeing the topic pick up again about why you should avoid BPC/TB due to possible increase in cancer likelihood. I can't tell if this is all just fear mongering or not. There doesn't appear to be any evidence regarding this outside of referencing a mouse study that was done: ---------------------------------------------------------------------------------------------------------------------------------------------------------- "In most solid tumors studied in mice, including fibrosarcoma, melanoma, non-small cell lung cancer (NSCLC), colon cancer, and glioblastoma, TB4 overexpression promotes tumor growth, metastasis, and angiogenesis." ----------------------------------------------------------------------------------------------------------------------------------------------------------- One person is stating that since BPC up-regulates VEGF, this would be a pathway towards cancer development (below is what they posted). ----------------------------------------------------------------------------------------------------------------------------------------------- VEGF is historically a promoting factor in oncological aspects rather than causative, but this isn't the only concern. VEGF was originally named "vascular permeability factor" for a reason. It opens gaps between endothelial cells, letting plasma proteins and fluid leak into the interstitial space. Off-target stimulation means edema in tissues that don't need increased perfusion. The problem is that VEGF receptors sit on endothelial cells throughout the entire body, not just in the tissue you're trying to help. So if VEGF reaches non-target tissues, several things go wrong. It can produce off-target angiogenesis, meaning new blood vessel growth where you do not want it. That can produce abnormal, fragile, leaky vessels rather than healthy functional ones. VEGF also increases vascular permeability, so tissue can become swollen or edematous. PMID: 35969170, 20400620