or work as a miner, builder, lumberjack and so on. Really, any job is a health arbitrage to some extent. White collar office workers develop diabetes, back pro

or work as a miner, builder, lumberjack and so on. Really, any job is a health arbitrage to some extent. White collar office workers develop diabetes, back problems and obesity. There's two factors: the price per "unit of health" lost, and extent to which the swap is voluntary. Clearly, anything involuntary is bad. Though... I have 4 mouths to feed, even if a desk job gives me a bad back and RSI, I'll still do it, and try to work around those, like it or not. The "extent" is a different story a bit. Selling a kidney seems extreme and endows someone with an immediate disability. Is it worse, though, than playing in NFL? I guess yes. But then _donating_ a kidney is a noble and well-regarded thing. So... maybe selling one is OK too? I wonder if you sorted "health arbitrages" by the severity of health loss, if you'd find their societal acceptability follow some well-defined cutoff.