Someone with medical knowledge should clear this up. Tissue death happens when no, or very little freshly oxygenated blood is allowed into the tissue. Edging is simply masturbating to keep an erection, without cumming. Unless your clamped while edging, how does excessive edging kill tissue Bluray?
We all have to be careful about spreading info without it being factual. I can edge, and/or have sex for hours, without losing erections, and my eq is great.