> it's a win-win for both the donor and recipient. Donating blood is especially good for men who have high iron Donating blood isn't really a win-win for most

> it's a win-win for both the donor and recipient. Donating blood is especially good for men who have high iron Donating blood isn't really a win-win for most people - some people with certain conditions benefit - see: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957680/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4957680/ Most healthy people will gain no benefit from it. In these cases it is simply not significantly harmful.